Remote Debugging (3)
use Eclipse| a Web application
创建一个简单的web项目
AServlet.java
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
package cn.zno; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class AServlet extends HttpServlet { private static final long serialVersionUID = 1L; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.getWriter().append("Served at: ").append(request.getContextPath()); } }
web.xml
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app> <display-name>Archetype Created Web Application</display-name> <servlet> <servlet-name>AServlet</servlet-name> <display-name>AServlet</display-name> <description></description> <servlet-class>cn.zno.AServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>AServlet</servlet-name> <url-pattern>/AServlet</url-pattern> </servlet-mapping> </web-app>
pom.xml
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>cn.zno</groupId> <artifactId>za</artifactId> <packaging>war</packaging> <version>1.0</version> <name>za Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provider</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> </dependencies> <build> <finalName>za</finalName> </build> </project>
构建一个war
[INFO] Building war: F:\e\workspacetest\za\target\za.war
部署到远程tomcat并以debug模式启动
%CATALINA_HOME%/webapps/
webapps │ host-manager │ manager │ ROOT │ za.war
设置debug模式的参数(通过setenv.bat设置)
%CATALINA_HOME%/bin/ 下添加文件 setenv.bat 内容如下
set "JAVA_OPTS= -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8000,suspend=y %JAVA_OPTS%"
如下图:
该文件会自动被catalina.bat 执行
启动
F:\e\tomcat\apache-tomcat-7.0.70\bin>startup.bat
会出现挂起的tomcat
启动debugger
远程电脑tomcat会继续执行,将 za 部署,日志如下:
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server version: Apache Tomcat/7.0.70
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server built: Jun 15 2016 16:27:45 UTC
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server number: 7.0.70.0
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: OS Name: Windows 7
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: OS Version: 6.1
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Architecture: amd64
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Java Home: F:\e\java\jdk1.8.0_101\jre
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: JVM Version: 1.8.0_101-b13
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: JVM Vendor: Oracle Corporation
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: CATALINA_BASE: F:\e\tomcat\apache-tomcat-7.0.70
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: CATALINA_HOME: F:\e\tomcat\apache-tomcat-7.0.70
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Xdebug
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Xrunjdwp:transport=dt_socket,server=y,address=8000,suspend=y
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.util.logging.config.file=F:\e\tomcat\apache-tomcat-7.0.70\conf\logging.properties
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.endorsed.dirs=F:\e\tomcat\apache-tomcat-7.0.70\endorsed
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dcatalina.base=F:\e\tomcat\apache-tomcat-7.0.70
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dcatalina.home=F:\e\tomcat\apache-tomcat-7.0.70
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.io.tmpdir=F:\e\tomcat\apache-tomcat-7.0.70\temp
Sep 20, 2016 12:18:23 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: F:\e\java\jdk1.8.0_101\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Microsoft\Web Platform Installer\;C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\;F:\e\java\jdk1.8.0_101\bin;C:\Program Files\TortoiseSVN\bin;E:\apache-ant-1.9.6\bin;C:\Program Files\Git\cmd;F:\e\maven\apache-maven-3.2.5\bin;.
Sep 20, 2016 12:18:23 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
Sep 20, 2016 12:18:23 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 838 ms
Sep 20, 2016 12:18:23 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Sep 20, 2016 12:18:23 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.70
Sep 20, 2016 12:18:23 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive F:\e\tomcat\apache-tomcat-7.0.70\webapps\za.war
Sep 20, 2016 12:18:24 PM org.apache.catalina.loader.WebappClassLoaderBase validateJarFile
INFO: validateJarFile(F:\e\tomcat\apache-tomcat-7.0.70\webapps\za\WEB-INF\lib\servlet-api-2.5.jar) - jar not loaded. See Servlet Spec 3.0, section 10.7.2. Offending class: javax/servlet/Servlet.class
Sep 20, 2016 12:18:24 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deployment of web application archive F:\e\tomcat\apache-tomcat-7.0.70\webapps\za.war has finished in 551 ms
Sep 20, 2016 12:18:24 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory F:\e\tomcat\apache-tomcat-7.0.70\webapps\host-manager
Sep 20, 2016 12:18:24 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deployment of web application directory F:\e\tomcat\apache-tomcat-7.0.70\webapps\host-manager has finished in 127 ms
Sep 20, 2016 12:18:24 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory F:\e\tomcat\apache-tomcat-7.0.70\webapps\manager
Sep 20, 2016 12:18:24 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deployment of web application directory F:\e\tomcat\apache-tomcat-7.0.70\webapps\manager has finished in 92 ms
Sep 20, 2016 12:18:24 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory F:\e\tomcat\apache-tomcat-7.0.70\webapps\ROOT
Sep 20, 2016 12:18:24 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deployment of web application directory F:\e\tomcat\apache-tomcat-7.0.70\webapps\ROOT has finished in 79 ms
Sep 20, 2016 12:18:24 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
Sep 20, 2016 12:18:24 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Sep 20, 2016 12:18:24 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 977 ms
访问浏览器
http://localhost:8080/za/AServlet
即可进入到AServlet中的断点
浏览器页面加载中且进入到了Eclipse中的断点
继续执行后,浏览器显示结果