java程序编译java源文件

JavacCompile文件：

package yan.demo.javac;

import java.io.File;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import javax.tools.Diagnostic;

import javax.tools.DiagnosticCollector;

import javax.tools.FileObject;

import javax.tools.JavaCompiler;

import javax.tools.JavaFileObject;

import javax.tools.StandardJavaFileManager;

import javax.tools.ToolProvider;

/**

* 編譯java源文件

*

* @author Chen Ya Yuan

* @Email chen.ya.yuan@163.com

* @version V1.0

*/

public class JavacCompile {

public static void main(String[] args) throws Exception {

compilePackage(

Conf.readProperties("project.path")+ Conf.readProperties("src.testentity"),

Conf.readProperties("project.libpath"),

Conf.readProperties("project.path")+ Conf.readProperties("classes"),

Conf.readProperties("project.sourcepath"));

}

/**

* 編譯該包及子包的所有類

* @param fromPath

*            文件來源

* @param libPath

*            項目依賴Jar包來源

* @param savePath

*            編譯後class字節碼文件保存路徑

* @param sourcePath

*            依賴源碼路徑

* @throws Exception

*/

public static void compilePackage(String fromPath, String libPath,

String savePath,String sourcePath) throws Exception {

// 要掃描的文件夾

File file = new File(fromPath);

// 存儲文件的數據

ArrayList allFile = ScanDirectory.getFile(file);

String fromFile = "";

// 设置编译选项

Iterable options = getCompileOptions(savePath, libPath, sourcePath);

for (File f : allFile) {

if (f.getName().matches(".*\\.java$")) { // 匹配java格式的文件

fromFile = f.getPath(); // java源文件 文件名

// 編譯文件

compilejava(fromFile, options, savePath);

}

}

}

/**

* 編譯單個java源文件

*

* @param fromFile

*            java源文件

* @param libPath

*            項目依賴Jar包來源

* @param savePath

*            編譯後class字節碼文件保存路徑

* @throws Exception

*/

public static void compilejava(String fromFile, Iterable options,

String savePath) throws Exception {

JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();

// 建立DiagnosticCollector對象

DiagnosticCollector diagnostics = new DiagnosticCollector();

StandardJavaFileManager fileManager = compiler.getStandardFileManager(

diagnostics, null, null);

// 设置编译选项

Iterable option = options;

// 建立用於保存被編譯文件名的對象

// 每個文件被保存在一個從JavaFileObject繼承的類中

Iterable compilationUnits = fileManager

.getJavaFileObjectsFromStrings(Arrays.asList(fromFile));

JavaCompiler.CompilationTask task = compiler.getTask(null, fileManager,

diagnostics, option, null, compilationUnits);

// 編譯源程序

boolean success = task.call();

for(Diagnostic diagnostic :diagnostics.getDiagnostics()){

System.out.format(//格式化編譯不成功時   輸出的相關信息

"Code: %s%n" +

"Kind: %s%n" +

"Position: %s%n" +

"Start Position: %s%n" +

"End Position: %s%n" +

"Source: %s%n" +

"Message:  %s%n",

diagnostic.getCode(), diagnostic.getKind(),

diagnostic.getPosition(), diagnostic.getStartPosition(),

diagnostic.getEndPosition(), diagnostic.getSource(),

diagnostic.getMessage(null)

);

}

fileManager.close();

System.out.println((success) ? fromFile + "  編譯成功" : fromFile

+ "  編譯失敗");

}

/**

* 设置编译选项

*

* @param savePath

*            編譯後class字節碼文件保存路徑

* @param libPath

*            項目依賴Jar包來源

* @param sourcePath

*            依賴源碼路徑

* @return

*/

public static Iterable getCompileOptions(String savePath,

String libPath,String sourcePath) {

List options = new ArrayList();

File file = new File(savePath);

if (!file.exists()) {

file.mkdirs(); // 路徑不存在時，創建

}

// 設置編譯後生成的類文件的輸出目錄

if (savePath != null) {

options.add("-d");

options.add(savePath);

}

// 設置用到的第三方類庫的目錄

if (libPath != null) {

options.add("-classpath");

options.add(getLibJar(libPath));

}

//指定查找輸入源文件的位置

if(sourcePath!=null){

options.add("-sourcepath");

options.add(sourcePath);

}

//輸出有關編譯器正在執行的操作的信息

//        options.add("-verbose");

//        options.add("-target");

//        options.add("1.6");

return options;

}

private static String getLibJar(String libPath) {

StringBuffer sb = new StringBuffer();

// 要掃描的文件夾

File file = new File(libPath);

// 存儲文件的數據

ArrayList allFile = ScanDirectory.getFile(file);

for (File f : allFile) {

if (f.getName().matches(".*\\.[jJ]+[aA]+[rR]+$")) { // 匹配jar格式的文件

sb.append(libPath + File.separator + f.getName() + ";"); // 多個jar文件用分號隔開

}

}

return sb.substring(0, sb.lastIndexOf(";"));

}

public JavacCompile(){

}

}

Conf文件：

package yan.demo.javac;

import java.io.FileInputStream;

import java.util.Enumeration;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import java.util.Properties;

/**

*

* @author Chen Ya Yuan

* @Email chen.ya.yuan@163.com

* @version V1.0

*/

public class Conf {

// 根据key读取value

public static String readProperties(String key) {

Properties props = new Properties();

try {

String path = Conf.class.getResource("/").getPath();

FileInputStream fis =

new FileInputStream(path+"config/Conf.chenyy.properties");

props.load(fis);

String property = props.getProperty(key.trim());

if(property!=null){

property=property.trim();

}

//            System.out.println(key + value);

return property;

} catch (Exception e) {

e.printStackTrace();

return null;

}

}

// 读取properties的全部信息

public static Map readAllProperties() {

Properties props = new Properties();

Map map = new HashMap();

try {

FileInputStream fis = new FileInputStream(Conf.class.getResource("/").getPath()+"config/Conf.chenyy.properties");

props.load(fis);

Enumeration en = props.propertyNames();

while (en.hasMoreElements()) {

String key = (String) en.nextElement();

String property = props.getProperty(key.trim());

if(property!=null){

property=property.trim();

}

map.put(key, property);

//                System.out.println(key + "   " + property.trim());

}

} catch (Exception e) {

e.printStackTrace();

}

return map;

}

public static void main(String[] args) {

Map map = new HashMap();

map = readAllProperties();

for(Object object: map.keySet()){

System.out.println("key:"+object+"   value:"+map.get(object));

}

}

}

Conf.chenyy.properties文件：

# the project path

project.path = E:/workspace/project/javacdemo

project.libpath = E:/workspace/project/javacdemo/lib

# set search -sourcepath

project.sourcepath = E:/workspace/project/javacdemo/src

#

src.testentity = /src/yan/demo/javac/test

#schema

schema0 = schema000

#schema1

schema1 = schema1111

#schema2

schema2 = schema2222

#

classes = /bin/classes