Question

有没有人设法从没有XJC的JAXB模式文件生成java代码？

与

有些相似

JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler()

用于动态编译java代码。

注意：在JDK 6上运行，意味着不推荐使用com.sun.*工具包（感谢Blaise Doughan提示）

Answer 1

我必须为我的解决方案包含一些J2EE库才能工作因为独立JDK 6无法访问xjc实用程序类：

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来源将放在 outputDirectory

中

Answer 2

此代码以特定的目录/包结构生成文件：

import java.io.File;
import java.io.IOException;

import org.xml.sax.InputSource;

import com.sun.codemodel.JCodeModel;
import com.sun.tools.xjc.api.S2JJAXBModel;
import com.sun.tools.xjc.api.SchemaCompiler;
import com.sun.tools.xjc.api.XJC;

public class JAXCodeGen {
    public static void main(String[] args) throws IOException {

            String outputDirectory = "E:/HEAD/JAXB/src/";

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

            // Setup SAX InputSource
            File schemaFile = new File("Item.xsd");
            InputSource is = new InputSource(schemaFile.toURI().toString());
          //  is.setSystemId(schemaFile.getAbsolutePath());

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

    }
}

Answer 3

以下内容可能有所帮助：

JAXB Ant Task Error: xjc2 [ERROR] null unknown location

Answer 4

获取JAXB参考实现here。

它包含允许您生成Java代码的com.sun.tools.xjc.api.XJC类。

Answer 5

在Maven中获取依赖项的另一种方法;

    <dependency>
        <groupId>org.glassfish.jaxb</groupId>
        <artifactId>jaxb-xjc</artifactId>
        <version>2.2.11</version>
    </dependency>

动态生成java源代码（不带xjc）

5 个答案: