动态生成java源码（没有xjc） [英] Dynamically generate java sources (without xjc)

问题描述

有没有人设法从没有XJC的JAXB架构文件生成java代码？

有点类似于

  JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler（） 
  

用于动态编译java代码。

注意：在JDK 6上运行，意味着 com.sun。* 工具包已被弃用（感谢 Blaise Doughan 的提示）

解决方案

我不得不为我的解决方案包含一些J2EE库，因为独立的JDK 6不提供对xjc实用程序类的访问：

  import 。com.sun.codemodel *; 
 import com.sun.tools.xjc.api。*; 
 import org.xml.sax.InputSource; 
 
 //配置源&输出
 String schemaPath =path / to / schema.xsd; 
 String outputDirectory =schema / output / source /; 
 
 //安装架构编译器
 SchemaCompiler sc = XJC.createSchemaCompiler（）; 
 sc.forcePackageName（com.xyz.schema.generated）; 
 
 //设置SAX InputSource 
文件schemaFile = new File（schemaPath）; 
 InputSource is = new InputSource（new FileInputStream（schemaFile））; 
 is.setSystemId（schemaFile.getAbsolutePath（））; 
 
 // Parse& build 
 sc.parseSchema（is）; 
 S2JJAXBModel model = sc.bind（）; 
 JCodeModel jCodeModel = model.generateCode（null，null）; 
 jCodeModel.build（new File（outputDirectory））; 
  

*。java源将被放在 outputDirectory

Has anyone managed to generate java code from a JAXB schema file without XJC?

Somewhat similar to

JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler()

used to dynamically compile java code on the fly.

Note: Running on JDK 6, meaning that com.sun.* tools packages are deprecated (thanks Blaise Doughan for the hint)

解决方案

I had to include some J2EE libraries for my solution to work cause standalone JDK 6 provides no access to xjc utility classes:

import com.sun.codemodel.*;
import com.sun.tools.xjc.api.*;
import org.xml.sax.InputSource;

// Configure sources & output
String schemaPath = "path/to/schema.xsd";
String outputDirectory = "schema/output/source/";

// Setup schema compiler
SchemaCompiler sc = XJC.createSchemaCompiler();
sc.forcePackageName("com.xyz.schema.generated");

// Setup SAX InputSource
File schemaFile = new File(schemaPath);
InputSource is = new InputSource(new FileInputStream(schemaFile));
is.setSystemId(schemaFile.getAbsolutePath());

// Parse & build
sc.parseSchema(is);
S2JJAXBModel model = sc.bind();
JCodeModel jCodeModel = model.generateCode(null, null);
jCodeModel.build(new File(outputDirectory));

*.java sources will be placed in outputDirectory

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