springboot2-request-logger - implemented spring filter
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package com.bvn13.example.recursion.print;
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/**
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* @author bvn13
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* @since 21.09.2019
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*/
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public class RecursionPrint {
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public static void main(String... args) {
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long n = 20;
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boolean result = printIt(1, n);
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}
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private static boolean printIt(long x, long n) {
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System.out.println(x);
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return String.valueOf(x).equals(String.valueOf(n)) || printIt(x+1, n);
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}
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}
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HELP.md
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.gradle
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build/
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!gradle/wrapper/gradle-wrapper.jar
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!**/src/main/**
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!**/src/test/**
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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.sts4-cache
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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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out/
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### NetBeans ###
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/nbproject/private/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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### VS Code ###
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.vscode/
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# How to log every Request in SpringBoot
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## Prerequesites
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Imagine we have an web SpringBoot application containing a [Controller](./src/main/java/com/bvn13/example/springboot/springrequestlogger/controllers/FirstController.java).
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It returns a template [index](/src/main/resources/templates/index.html) containing two links: on [css file](./src/main/resources/static/test.css) and on [js file](./src/main/resources/static/test.js).
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So we want to log every request from client while opening `index.html`:
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1. `index.html`
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2. `test.css`
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3. `test.js`
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## Enabling logging
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We must set up the logging of our classes. Take a look at example of [logback-spring.xml](./src/main/resources/logback-spring.xml).
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## Build a Filter
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Every Spring Web application have a chain on different filters. Every request flows through this filter chain before getting a controller.
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So we can implement a [logging filter](./src/main/java/com/bvn13/example/springboot/springrequestlogger/filters/RequestLoggingFilter.java) and put it into Spring Filter Chain to achieve our goal.
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```java
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@Slf4j
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@Component
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public class RequestLoggingFilter extends OncePerRequestFilter {
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@Override
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protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
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log.debug(
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String.format("FILTERED URL: %s", request.getRequestURI())
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);
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//continue filtering
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filterChain.doFilter(request, response);
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}
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}
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```
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Using `@Slf4j` annotation get us to decrease boilerplate code to have a logger in a class.
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We must annotate our class with `@Component` annotation to make SpringBoot to instantiate this class as spring bean in Singleton scope.
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Our class extends `OncePerRequestFilter` abstract class so every request goes through our filter only once.
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And we are able to log anything regarding the request inside `doFilterInternal` method.
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### Result
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You may run [testControllerLoggingWithFilter](./src/test/java/com/bvn13/example/springboot/springrequestlogger/SpringrequestloggerApplicationTests.java) to see the result
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```java
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@Test(expected = HttpClientErrorException.NotFound.class)
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public void testControllerLoggingWithFilter() {
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restTemplate.getForObject("http://localhost:"+port+"/", String.class);
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restTemplate.getForObject("http://localhost:"+port+"/test.js", String.class);
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restTemplate.getForObject("http://localhost:"+port+"/test.css", String.class);
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restTemplate.getForObject("http://localhost:"+port+"/does-not-exist.file", String.class);
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}
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```
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![](./img/2019-09-29_21-09.png)
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So our goal is achieved. We can see all files we request and not existing file too.
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plugins {
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id 'org.springframework.boot' version '2.1.8.RELEASE'
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id 'io.spring.dependency-management' version '1.0.8.RELEASE'
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id 'java'
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}
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group = 'com.bvn13.example.springboot'
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version = '0.0.1-SNAPSHOT'
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sourceCompatibility = '1.8'
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configurations {
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compileOnly {
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extendsFrom annotationProcessor
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}
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}
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repositories {
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mavenCentral()
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}
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dependencies {
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implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
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implementation 'org.springframework.boot:spring-boot-starter-web'
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compileOnly 'org.projectlombok:lombok'
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annotationProcessor 'org.projectlombok:lombok'
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testImplementation 'org.springframework.boot:spring-boot-starter-test'
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}
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distributionBase=GRADLE_USER_HOME
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distributionPath=wrapper/dists
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distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-bin.zip
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zipStoreBase=GRADLE_USER_HOME
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zipStorePath=wrapper/dists
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#!/usr/bin/env sh
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#
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# Copyright 2015 the original author or authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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##############################################################################
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##
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## Gradle start up script for UN*X
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##
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##############################################################################
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# Attempt to set APP_HOME
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# Resolve links: $0 may be a link
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PRG="$0"
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# Need this for relative symlinks.
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while [ -h "$PRG" ]; do
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ls=$(ls -ld "$PRG")
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link=$(expr "$ls" : '.*-> \(.*\)$')
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if expr "$link" : '/.*' >/dev/null; then
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PRG="$link"
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else
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PRG=$(dirname "$PRG")"/$link"
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fi
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done
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SAVED="$(pwd)"
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cd "$(dirname \"$PRG\")/" >/dev/null
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APP_HOME="$(pwd -P)"
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cd "$SAVED" >/dev/null
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APP_NAME="Gradle"
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APP_BASE_NAME=$(basename "$0")
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# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
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DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
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# Use the maximum available, or set MAX_FD != -1 to use that value.
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MAX_FD="maximum"
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warn() {
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echo "$*"
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}
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die() {
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echo
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echo "$*"
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echo
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exit 1
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}
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# OS specific support (must be 'true' or 'false').
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cygwin=false
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msys=false
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darwin=false
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nonstop=false
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case "$(uname)" in
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CYGWIN*)
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cygwin=true
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;;
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Darwin*)
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darwin=true
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;;
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MINGW*)
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msys=true
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;;
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NONSTOP*)
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nonstop=true
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;;
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esac
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CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
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# Determine the Java command to use to start the JVM.
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if [ -n "$JAVA_HOME" ]; then
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if [ -x "$JAVA_HOME/jre/sh/java" ]; then
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# IBM's JDK on AIX uses strange locations for the executables
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JAVACMD="$JAVA_HOME/jre/sh/java"
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else
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JAVACMD="$JAVA_HOME/bin/java"
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fi
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if [ ! -x "$JAVACMD" ]; then
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die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
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Please set the JAVA_HOME variable in your environment to match the
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location of your Java installation."
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fi
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else
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JAVACMD="java"
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which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
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Please set the JAVA_HOME variable in your environment to match the
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location of your Java installation."
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fi
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# Increase the maximum file descriptors if we can.
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if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ]; then
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MAX_FD_LIMIT=$(ulimit -H -n)
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if [ $? -eq 0 ]; then
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if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ]; then
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MAX_FD="$MAX_FD_LIMIT"
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fi
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ulimit -n $MAX_FD
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if [ $? -ne 0 ]; then
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warn "Could not set maximum file descriptor limit: $MAX_FD"
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fi
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else
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warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
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fi
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fi
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# For Darwin, add options to specify how the application appears in the dock
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if $darwin; then
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GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
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fi
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# For Cygwin or MSYS, switch paths to Windows format before running java
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if [ "$cygwin" = "true" -o "$msys" = "true" ]; then
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APP_HOME=$(cygpath --path --mixed "$APP_HOME")
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CLASSPATH=$(cygpath --path --mixed "$CLASSPATH")
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JAVACMD=$(cygpath --unix "$JAVACMD")
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# We build the pattern for arguments to be converted via cygpath
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ROOTDIRSRAW=$(find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null)
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SEP=""
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for dir in $ROOTDIRSRAW; do
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ROOTDIRS="$ROOTDIRS$SEP$dir"
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SEP="|"
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done
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OURCYGPATTERN="(^($ROOTDIRS))"
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# Add a user-defined pattern to the cygpath arguments
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if [ "$GRADLE_CYGPATTERN" != "" ]; then
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OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
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fi
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# Now convert the arguments - kludge to limit ourselves to /bin/sh
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i=0
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for arg in "$@"; do
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CHECK=$(echo "$arg" | egrep -c "$OURCYGPATTERN" -)
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CHECK2=$(echo "$arg" | egrep -c "^-") ### Determine if an option
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if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ]; then ### Added a condition
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eval $(echo args$i)=$(cygpath --path --ignore --mixed "$arg")
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else
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eval $(echo args$i)="\"$arg\""
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fi
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i=$((i + 1))
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done
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case $i in
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0) set -- ;;
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1) set -- "$args0" ;;
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2) set -- "$args0" "$args1" ;;
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3) set -- "$args0" "$args1" "$args2" ;;
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4) set -- "$args0" "$args1" "$args2" "$args3" ;;
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5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
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6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
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7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
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8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
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9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
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esac
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fi
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# Escape application args
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save() {
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for i; do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/"; done
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echo " "
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}
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APP_ARGS=$(save "$@")
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# Collect all arguments for the java command, following the shell quoting and substitution rules
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eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
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# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
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if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
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cd "$(dirname "$0")"
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fi
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exec "$JAVACMD" "$@"
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@ -0,0 +1,100 @@
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@rem
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@rem Copyright 2015 the original author or authors.
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@rem
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@rem Licensed under the Apache License, Version 2.0 (the "License");
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@rem you may not use this file except in compliance with the License.
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@rem You may obtain a copy of the License at
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@rem
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@rem https://www.apache.org/licenses/LICENSE-2.0
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@rem
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@rem Unless required by applicable law or agreed to in writing, software
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@rem distributed under the License is distributed on an "AS IS" BASIS,
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@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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@rem See the License for the specific language governing permissions and
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@rem limitations under the License.
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@rem
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@if "%DEBUG%" == "" @echo off
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@rem ##########################################################################
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@rem
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@rem Gradle startup script for Windows
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@rem
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@rem ##########################################################################
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@rem Set local scope for the variables with windows NT shell
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if "%OS%"=="Windows_NT" setlocal
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set DIRNAME=%~dp0
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if "%DIRNAME%" == "" set DIRNAME=.
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set APP_BASE_NAME=%~n0
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set APP_HOME=%DIRNAME%
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@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
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set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
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@rem Find java.exe
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if defined JAVA_HOME goto findJavaFromJavaHome
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set JAVA_EXE=java.exe
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|
%JAVA_EXE% -version >NUL 2>&1
|
||||||
|
if "%ERRORLEVEL%" == "0" goto init
|
||||||
|
|
||||||
|
echo.
|
||||||
|
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
|
||||||
|
echo.
|
||||||
|
echo Please set the JAVA_HOME variable in your environment to match the
|
||||||
|
echo location of your Java installation.
|
||||||
|
|
||||||
|
goto fail
|
||||||
|
|
||||||
|
:findJavaFromJavaHome
|
||||||
|
set JAVA_HOME=%JAVA_HOME:"=%
|
||||||
|
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
|
||||||
|
|
||||||
|
if exist "%JAVA_EXE%" goto init
|
||||||
|
|
||||||
|
echo.
|
||||||
|
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
|
||||||
|
echo.
|
||||||
|
echo Please set the JAVA_HOME variable in your environment to match the
|
||||||
|
echo location of your Java installation.
|
||||||
|
|
||||||
|
goto fail
|
||||||
|
|
||||||
|
:init
|
||||||
|
@rem Get command-line arguments, handling Windows variants
|
||||||
|
|
||||||
|
if not "%OS%" == "Windows_NT" goto win9xME_args
|
||||||
|
|
||||||
|
:win9xME_args
|
||||||
|
@rem Slurp the command line arguments.
|
||||||
|
set CMD_LINE_ARGS=
|
||||||
|
set _SKIP=2
|
||||||
|
|
||||||
|
:win9xME_args_slurp
|
||||||
|
if "x%~1" == "x" goto execute
|
||||||
|
|
||||||
|
set CMD_LINE_ARGS=%*
|
||||||
|
|
||||||
|
:execute
|
||||||
|
@rem Setup the command line
|
||||||
|
|
||||||
|
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
|
||||||
|
|
||||||
|
@rem Execute Gradle
|
||||||
|
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
|
||||||
|
|
||||||
|
:end
|
||||||
|
@rem End local scope for the variables with windows NT shell
|
||||||
|
if "%ERRORLEVEL%"=="0" goto mainEnd
|
||||||
|
|
||||||
|
:fail
|
||||||
|
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
|
||||||
|
rem the _cmd.exe /c_ return code!
|
||||||
|
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
|
||||||
|
exit /b 1
|
||||||
|
|
||||||
|
:mainEnd
|
||||||
|
if "%OS%"=="Windows_NT" endlocal
|
||||||
|
|
||||||
|
:omega
|
Binary file not shown.
After Width: | Height: | Size: 214 KiB |
|
@ -0,0 +1 @@
|
||||||
|
rootProject.name = 'springboot2-request-logger'
|
|
@ -0,0 +1,13 @@
|
||||||
|
package com.bvn13.example.springboot.springrequestlogger;
|
||||||
|
|
||||||
|
import org.springframework.boot.SpringApplication;
|
||||||
|
import org.springframework.boot.autoconfigure.SpringBootApplication;
|
||||||
|
|
||||||
|
@SpringBootApplication
|
||||||
|
public class SpringrequestloggerApplication {
|
||||||
|
|
||||||
|
public static void main(String[] args) {
|
||||||
|
SpringApplication.run(SpringrequestloggerApplication.class, args);
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
|
@ -0,0 +1,26 @@
|
||||||
|
package com.bvn13.example.springboot.springrequestlogger.controllers;
|
||||||
|
|
||||||
|
import org.springframework.stereotype.Controller;
|
||||||
|
import org.springframework.web.bind.annotation.GetMapping;
|
||||||
|
import org.springframework.web.bind.annotation.PostMapping;
|
||||||
|
import org.springframework.web.bind.annotation.RequestMapping;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @author bvn13
|
||||||
|
* @since 29.09.2019
|
||||||
|
*/
|
||||||
|
@Controller
|
||||||
|
@RequestMapping(value = "/first")
|
||||||
|
public class FirstController {
|
||||||
|
|
||||||
|
@GetMapping
|
||||||
|
public String getFirst() {
|
||||||
|
return "index";
|
||||||
|
}
|
||||||
|
|
||||||
|
@PostMapping
|
||||||
|
public String postFirst() {
|
||||||
|
return "redirect:/";
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
|
@ -0,0 +1,29 @@
|
||||||
|
package com.bvn13.example.springboot.springrequestlogger.filters;
|
||||||
|
|
||||||
|
import lombok.extern.slf4j.Slf4j;
|
||||||
|
import org.springframework.stereotype.Component;
|
||||||
|
import org.springframework.web.filter.OncePerRequestFilter;
|
||||||
|
|
||||||
|
import javax.servlet.FilterChain;
|
||||||
|
import javax.servlet.ServletException;
|
||||||
|
import javax.servlet.http.HttpServletRequest;
|
||||||
|
import javax.servlet.http.HttpServletResponse;
|
||||||
|
import java.io.IOException;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @author bvn13
|
||||||
|
* @since 29.09.2019
|
||||||
|
*/
|
||||||
|
@Slf4j
|
||||||
|
@Component
|
||||||
|
public class RequestLoggingFilter extends OncePerRequestFilter {
|
||||||
|
@Override
|
||||||
|
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
|
||||||
|
log.debug(
|
||||||
|
String.format("FILTERED URL: %s", request.getRequestURI())
|
||||||
|
);
|
||||||
|
|
||||||
|
//continue filtering
|
||||||
|
filterChain.doFilter(request, response);
|
||||||
|
}
|
||||||
|
}
|
|
@ -0,0 +1 @@
|
||||||
|
|
|
@ -0,0 +1,23 @@
|
||||||
|
<?xml version="1.0" encoding="UTF-8"?>
|
||||||
|
<configuration>
|
||||||
|
|
||||||
|
<appender name="Console"
|
||||||
|
class="ch.qos.logback.core.ConsoleAppender">
|
||||||
|
<layout class="ch.qos.logback.classic.PatternLayout">
|
||||||
|
<Pattern>
|
||||||
|
%black(%d{ISO8601}) %highlight(%-5level) [%blue(%t)] %yellow(%C{1.}): %msg%n%throwable
|
||||||
|
</Pattern>
|
||||||
|
</layout>
|
||||||
|
</appender>
|
||||||
|
|
||||||
|
<!-- LOG everything at INFO level -->
|
||||||
|
<root level="info">
|
||||||
|
<appender-ref ref="Console" />
|
||||||
|
</root>
|
||||||
|
|
||||||
|
<!-- LOG "com.bvn13*" at TRACE level -->
|
||||||
|
<logger name="com.bvn13" level="trace" additivity="false">
|
||||||
|
<appender-ref ref="Console" />
|
||||||
|
</logger>
|
||||||
|
|
||||||
|
</configuration>
|
|
@ -0,0 +1,3 @@
|
||||||
|
body {
|
||||||
|
width: 75%;
|
||||||
|
}
|
|
@ -0,0 +1 @@
|
||||||
|
console.log("hello, World!");
|
|
@ -0,0 +1,13 @@
|
||||||
|
<!DOCTYPE html>
|
||||||
|
<html lang="en">
|
||||||
|
<head>
|
||||||
|
<meta charset="UTF-8">
|
||||||
|
<title>Index</title>
|
||||||
|
|
||||||
|
<link rel="stylesheet" type="text/css" href="test.css"/>
|
||||||
|
<script src="test.js"></script>
|
||||||
|
</head>
|
||||||
|
<body>
|
||||||
|
test
|
||||||
|
</body>
|
||||||
|
</html>
|
|
@ -0,0 +1,34 @@
|
||||||
|
package com.bvn13.example.springboot.springrequestlogger;
|
||||||
|
|
||||||
|
import org.junit.Before;
|
||||||
|
import org.junit.Test;
|
||||||
|
import org.junit.runner.RunWith;
|
||||||
|
import org.springframework.boot.test.context.SpringBootTest;
|
||||||
|
import org.springframework.boot.web.server.LocalServerPort;
|
||||||
|
import org.springframework.test.context.junit4.SpringRunner;
|
||||||
|
import org.springframework.web.client.HttpClientErrorException;
|
||||||
|
import org.springframework.web.client.RestTemplate;
|
||||||
|
|
||||||
|
@RunWith(SpringRunner.class)
|
||||||
|
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
|
||||||
|
public class SpringrequestloggerApplicationTests {
|
||||||
|
|
||||||
|
@LocalServerPort
|
||||||
|
int port;
|
||||||
|
|
||||||
|
private RestTemplate restTemplate;
|
||||||
|
|
||||||
|
@Before
|
||||||
|
public void init() {
|
||||||
|
restTemplate = new RestTemplate();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test(expected = HttpClientErrorException.NotFound.class)
|
||||||
|
public void testControllerLoggingWithFilter() {
|
||||||
|
restTemplate.getForObject("http://localhost:"+port+"/", String.class);
|
||||||
|
restTemplate.getForObject("http://localhost:"+port+"/test.js", String.class);
|
||||||
|
restTemplate.getForObject("http://localhost:"+port+"/test.css", String.class);
|
||||||
|
restTemplate.getForObject("http://localhost:"+port+"/does-not-exist.file", String.class);
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
Loading…
Reference in New Issue