Java读取DWG文件的完整步骤

project-root
├── libs
│   └── TeighaFileConverter.jar  
├── native
│   └── TFC_4.7_Win_x64.dll  // 根据系统选择
└── src
    └── DWGReader.java

<dependency>
  <groupId>com.opendesign</groupId>
  <artifactId>teigha-fileconverter</artifactId>
  <version>4.7</version>
  <scope>system</scope>
  <systemPath>${project.basedir}/libs/TeighaFileConverter.jar</systemPath>
</dependency>

import com.opendesign.core.TOdaApp;
import com.opendesign.core.TOdaFCModule;

public class DWGReader {
    
    // 初始化转换器实例
    private static TOdaFCModule initConverter(String dllPath) {
        System.load(dllPath); // 加载原生库
        TOdaApp.initialize(); 
        return TOdaFCModule.createInstance();
    }

    /**
     * 转换DWG为可读格式
     * @param inputPath 输入文件路径 (e.g: $C:\\dwg\\sample.dwg$)
     * @param outputPath 输出文件路径 (e.g: $C:\\dxf\\output.dxf$)
     */
    public static void convertDWG(String inputPath, String outputPath) {
        TOdaFCModule converter = initConverter("native/TFC_4.7_Win_x64.dll");
        
        try {
            // 设置转换参数
            converter.setInputFile(inputPath);
            converter.setOutputFile(outputPath);
            converter.setOutputFormat(TOdaFCModule.ODA_DXF); // 输出为DXF
            
            // 执行转换（返回0表示成功）
            int result = converter.convert(); 
            if (result == 0) {
                System.out.println("转换成功！输出文件: " + outputPath);
            } else {
                System.err.println("错误代码: " + result);
            }
        } finally {
            converter.delete(); // 释放资源
        }
    }

    public static void main(String[] args) {
        convertDWG("design.dwg", "converted.dxf"); // 实际路径需替换
    }
}

java.lang.UnsatisfiedLinkError: no TFC_4.7_Win_x64 in java.library.path

Files.walk(Paths.get("dwg_folder"))
     .filter(f -> f.toString().endsWith(".dwg"))
     .forEach(path -> convertDWG(path.toString(), ...));

try (BufferedReader br = new BufferedReader(new FileReader("converted.dxf"))) {
    br.lines()
      .filter(line -> line.contains("BLOCK") || line.contains("LAYER"))
      .forEach(System.out::println); // 输出图层信息
}