讓Eclipse的TomcatPlugin支持Tomcat 8.x
阿新 • • 發佈：2018-07-18
ins win stat 報錯 src equals iterator edr access
實現步驟：
1.下載eclipse tomcat 插件（略）
2.配置tomcat
tomcat插件下載完成後 Window-->Preperences 中找到tomcat配置項
?
3.配置server.xml
在conf/目錄下找到server.xml文件，並在 Engine 標簽中添加如下內容：
<Host name="www2.domain1.com" appBase="webapps" unpackWARs="true" autoDeploy="true">
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log" suffix=".txt" pattern="%h %l %u %t "%r" %s %b" />
<Context path="" reloadable="true" docBase="項目目錄1\src\main\webapp" workDir="項目目錄1\work" >
<Loader className="org.apache.catalina.loader.DevLoader" reloadable="true" debug="1" useSystemClassLoaderAsParent="false" />
</Context>
</Host>
<Host name="www2.domain2.com" appBase="webapps" unpackWARs="true" autoDeploy="true">
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log" suffix=".txt" pattern="%h %l %u %t "%r" %s %b" />
<Context path="" reloadable="true" docBase="項目目錄2\src\main\webapp" workDir="項目目錄2\work" >
<Loader className="org.apache.catalina.loader.MyDevLoader" reloadable="true" debug="1" useSystemClassLoaderAsParent="false" />
</Context>
</Host>
4.配置hosts文件
在windows/system32/drivers/etc 目錄下找到hosts文件，添加如下內容：
# 127.0.0.1 localhost # ::1 localhost 127.0.0.1 www2.domain1.com www2.domain2.com www2.domain3.com
5.生成jar包
1.新建一個項目（或者使用原有的項目），創建一個包 名稱為：org.apache.catalina.loader, 再創建一個類，名稱為 MyDevLoader，拷貝下面java代碼部分
備註：你可以隨意創建一個包名和類名，但需要與 <Loader className="org.apache.catalina.loader.MyDevLoader" reloadable="true" debug="1" useSystemClassLoaderAsParent="false" /> 中的className保持一至即可。
2、消除編譯報錯的地方。主要是tomcat 中的lib目錄下相關的jar包沒有引入進來。
3、重新打成JAR包，命名DevloaderTomcat8.jar。
4、將這個jar文件放入tomcat 中的lib目錄下。
package org.apache.catalina.loader;
import java.io.File;
import java.io.FileFilter;
import java.io.FileReader;
import java.io.IOException;
import java.io.LineNumberReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.StringTokenizer;
import javax.servlet.ServletContext;
import org.apache.catalina.Context;
import org.apache.catalina.Globals;
import org.apache.catalina.LifecycleException;
/**
* @author caoxiaobo
* 備註：修改DevLoader源碼後的，請生成jar包，然後放置tomcat中的lib目錄下；
*/
public class MyDevLoader extends WebappLoader {
private static final String info =
"org.apache.catalina.loader.MyDevLoader/1.0";
private String webClassPathFile = ".#webclasspath";
private String tomcatPluginFile = ".tomcatplugin";
public MyDevLoader() {
super();
}
public MyDevLoader(ClassLoader parent) {
super(parent);
}
/**
* @see org.apache.catalina.Lifecycle#start()
* 如果您使用的是tomcat7，此處的方法名稱為start()，如果是tomcat8，此處的方法名稱為startInternal()
*/
public void startInternal() throws LifecycleException {
log("Starting MyDevLoader");
//setLoaderClass(DevWebappClassLoader.class.getName());
// 如果是tomcat7，此處調用 start()方法，如果是tomcat8，此處調用startInternal()方法
// super.start(); // tomcat7
super.startInternal(); // tomcat8
ClassLoader cl = super.getClassLoader();
if (cl instanceof WebappClassLoader == false) {
logError("Unable to install WebappClassLoader !");
return;
}
WebappClassLoader devCl = (WebappClassLoader) cl;
List webClassPathEntries = readWebClassPathEntries();
StringBuffer classpath = new StringBuffer();
for (Iterator it = webClassPathEntries.iterator(); it.hasNext();) {
String entry = (String) it.next();
File f = new File(entry);
if (f.exists()) {
if (f.isDirectory() && entry.endsWith("/")==false) f = new File(entry + "/");
try {
URL url = f.toURL();
devCl.addURL(url); // tomcat8
// devCl.addRepository(url.toString()); // tomcat7
classpath.append(f.toString() + File.pathSeparatorChar);
log("added " + url.toString());
} catch (MalformedURLException e) {
logError(entry + " invalid (MalformedURL)");
}
} else {
logError(entry + " does not exist !");
}
}
/*
try {
devCl.loadClass("at.kase.webfaces.WebApplication");
devCl.loadClass("at.kase.taglib.BaseTag");
devCl.loadClass("at.kase.taglib.xhtml.XHTMLTag");
devCl.loadClass("at.kase.common.reflect.ClassHelper");
devCl.loadClass("javax.servlet.jsp.jstl.core.Config");
log("ALL OKAY !");
} catch(Exception e) {
logError(e.toString());
}*/
String cp = (String)getServletContext().getAttribute(Globals.CLASS_PATH_ATTR);
StringTokenizer tokenizer = new StringTokenizer(cp, File.pathSeparatorChar+"");
while(tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
// only on windows
if (token.charAt(0)==‘/‘ && token.charAt(2)==‘:‘) token = token.substring(1);
classpath.append(token + File.pathSeparatorChar);
}
//cp = classpath + cp;
getServletContext().setAttribute(Globals.CLASS_PATH_ATTR, classpath.toString());
log("JSPCompiler Classpath = " + classpath);
}
protected void log(String msg) {
System.out.println("[MyDevLoader] " + msg);
}
protected void logError(String msg) {
System.err.println("[MyDevLoader] Error: " + msg);
}
protected List readWebClassPathEntries() {
List rc = null;
File prjDir = getProjectRootDir();
if (prjDir == null) {
return new ArrayList();
}
log("projectdir=" + prjDir.getAbsolutePath());
// try loading tomcat plugin file
// DON"T LOAD TOMCAT PLUGIN FILE (DOESN‘t HAVE FULL PATHS ANYMORE)
//rc = loadTomcatPluginFile(prjDir);
if (rc ==null) {
rc = loadWebClassPathFile(prjDir);
}
if (rc == null) rc = new ArrayList(); // should not happen !
return rc;
}
protected File getProjectRootDir() {
File rootDir = getWebappDir();
FileFilter filter = new FileFilter() {
public boolean accept(File file) {
return (file.getName().equalsIgnoreCase(webClassPathFile) ||
file.getName().equalsIgnoreCase(tomcatPluginFile));
}
};
while(rootDir != null) {
File[] files = rootDir.listFiles(filter);
if (files != null && files.length >= 1) {
return files[0].getParentFile();
}
rootDir = rootDir.getParentFile();
}
return null;
}
protected List loadWebClassPathFile(File prjDir) {
File cpFile = new File(prjDir, webClassPathFile);
if (cpFile.exists()) {
FileReader reader = null;
try {
List rc = new ArrayList();
reader = new FileReader(cpFile);
LineNumberReader lr = new LineNumberReader(reader);
String line = null;
while((line = lr.readLine()) != null) {
// convert ‘\‘ to ‘/‘
line = line.replace(‘\\‘, ‘/‘);
rc.add(line);
}
return rc;
} catch(IOException ioEx) {
if (reader != null) try { reader.close(); } catch(Exception ignored) {}
return null;
}
} else {
return null;
}
}
/*
protected List loadTomcatPluginFile(File prjDir) {
File cpFile = new File(prjDir, tomcatPluginFile);
if (cpFile.exists()) {
FileReader reader = null;
try {
StringBuffer buf = new StringBuffer();
BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(cpFile)));
String inputLine;
while ((inputLine = in.readLine()) != null) {
buf.append(inputLine);
buf.append(‘\n‘);
}
WebClassPathEntries entries = WebClassPathEntries.xmlUnmarshal(buf.toString());
if (entries == null) {
log("no entries found in tomcatplugin file !");
return null;
}
return entries.getList();
} catch(IOException ioEx) {
if (reader != null) try { reader.close(); } catch(Exception ignored) {}
return null;
}
} else {
return null;
}
}
*/
protected ServletContext getServletContext() {
// return ((Context) getContainer()).getServletContext(); // tomcat7
return super.getContext().getServletContext(); // tomcat8
}
protected File getWebappDir() {
File webAppDir = new File(getServletContext().getRealPath("/"));
return webAppDir;
}
}
右鍵項目--> Properties --> Tomcat
至此我們已經配置完結了！
點擊如下圖標開始啟動項目
出現如下信息表示配置成功.
讓Eclipse的TomcatPlugin支持Tomcat 8.x