c40b3482df
- 创建problem目录存储问题分析和解决方案 - 添加Aspose.CAD Python问题详细报告 - 提供Java版本测试方案和完整代码 - 创建Java版本安装运行指南 - 更新README文档包含Java版本推荐 - 添加颜色元素提取相关脚本 - 提供完整的Maven项目配置
253 lines
8.8 KiB
Markdown
253 lines
8.8 KiB
Markdown
# Aspose.CAD for Java 测试方案
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## 📋 概述
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基于 [Aspose.CAD for Java 文档](https://docs.aspose.com/cad/java/)，Java 版本可能有更好的 API 实现，可以解决 Python 版本的问题。
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## 🔧 环境要求
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### Java 环境
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- **Java 版本**: 1.6 或更高版本
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- **推荐版本**: Java 8 或 Java 11
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- **下载地址**: [Oracle Java](https://www.oracle.com/java/technologies/downloads/) 或 [OpenJDK](https://openjdk.org/)
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### Maven 环境
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- **Maven 版本**: 3.6 或更高版本
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- **下载地址**: [Apache Maven](https://maven.apache.org/download.cgi)
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## 📦 依赖配置
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### Maven 依赖
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```xml
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<dependency>
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<groupId>com.aspose</groupId>
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<artifactId>aspose-cad</artifactId>
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<version>23.1.0</version>
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</dependency>
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```
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### Gradle 依赖
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```gradle
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implementation 'com.aspose:aspose-cad:23.1.0'
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```
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## 🚀 Java 测试代码
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### 基本测试类
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```java
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import com.aspose.cad.Image;
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import com.aspose.cad.fileformats.cad.CadImage;
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import com.aspose.cad.fileformats.cad.cadobjects.CadLine;
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import com.aspose.cad.fileformats.cad.cadobjects.CadPolyline;
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import com.aspose.cad.Color;
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import java.io.File;
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import java.util.List;
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public class DwgColorExtractor {
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public static void main(String[] args) {
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String dwgPath = "测试图纸文件.dwg";
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Color targetColor = Color.fromArgb(255, 0, 255, 255); // RGB(0, 255, 255)
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try {
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// 加载DWG文件
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CadImage cadImage = (CadImage) Image.load(dwgPath);
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System.out.println("成功加载DWG文件");
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System.out.println("图像尺寸: " + cadImage.getWidth() + " x " + cadImage.getHeight());
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// 提取特定颜色的元素
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extractColorElements(cadImage, targetColor);
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} catch (Exception e) {
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System.err.println("加载DWG文件失败: " + e.getMessage());
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e.printStackTrace();
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}
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}
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private static void extractColorElements(CadImage cadImage, Color targetColor) {
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try {
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// 方法1: 从blocks获取实体
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if (cadImage.getBlocks() != null) {
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System.out.println("找到 " + cadImage.getBlocks().size() + " 个块");
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for (int i = 0; i < cadImage.getBlocks().size(); i++) {
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var block = cadImage.getBlocks().get(i);
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if (block.getEntities() != null) {
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System.out.println("块 " + i + " 中有 " + block.getEntities().size() + " 个实体");
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for (int j = 0; j < block.getEntities().size(); j++) {
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var entity = block.getEntities().get(j);
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if (isColorMatch(entity, targetColor)) {
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System.out.println("找到匹配颜色的实体: " + entity.getClass().getSimpleName());
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printEntityInfo(entity);
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}
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}
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}
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}
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}
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// 方法2: 从entities获取实体
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if (cadImage.getEntities() != null) {
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System.out.println("找到 " + cadImage.getEntities().size() + " 个实体");
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for (int i = 0; i < cadImage.getEntities().size(); i++) {
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var entity = cadImage.getEntities().get(i);
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if (isColorMatch(entity, targetColor)) {
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System.out.println("找到匹配颜色的实体: " + entity.getClass().getSimpleName());
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printEntityInfo(entity);
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}
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}
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}
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// 方法3: 从layers获取实体
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if (cadImage.getLayers() != null) {
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System.out.println("找到 " + cadImage.getLayers().size() + " 个图层");
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for (int i = 0; i < cadImage.getLayers().size(); i++) {
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var layer = cadImage.getLayers().get(i);
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if (layer.getEntities() != null) {
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System.out.println("图层 " + i + " 中有 " + layer.getEntities().size() + " 个实体");
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for (int j = 0; j < layer.getEntities().size(); j++) {
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var entity = layer.getEntities().get(j);
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if (isColorMatch(entity, targetColor)) {
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System.out.println("找到匹配颜色的实体: " + entity.getClass().getSimpleName());
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printEntityInfo(entity);
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}
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}
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}
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}
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}
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} catch (Exception e) {
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System.err.println("提取元素失败: " + e.getMessage());
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e.printStackTrace();
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}
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}
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private static boolean isColorMatch(Object entity, Color targetColor) {
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try {
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// 检查实体是否有颜色属性
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if (entity instanceof CadLine) {
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CadLine line = (CadLine) entity;
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if (line.getColor() != null) {
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return line.getColor().equals(targetColor);
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}
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} else if (entity instanceof CadPolyline) {
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CadPolyline polyline = (CadPolyline) entity;
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if (polyline.getColor() != null) {
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return polyline.getColor().equals(targetColor);
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}
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}
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// 使用反射检查颜色属性
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try {
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var colorField = entity.getClass().getField("color");
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var colorValue = colorField.get(entity);
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if (colorValue instanceof Color) {
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return ((Color) colorValue).equals(targetColor);
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}
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} catch (NoSuchFieldException | IllegalAccessException e) {
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// 忽略反射错误
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}
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} catch (Exception e) {
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System.err.println("检查颜色失败: " + e.getMessage());
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}
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return false;
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}
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private static void printEntityInfo(Object entity) {
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try {
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System.out.println(" 实体类型: " + entity.getClass().getSimpleName());
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// 尝试获取图层信息
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try {
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var layerField = entity.getClass().getField("layerName");
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var layerName = layerField.get(entity);
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System.out.println(" 图层: " + layerName);
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} catch (NoSuchFieldException | IllegalAccessException e) {
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// 忽略反射错误
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}
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// 尝试获取坐标信息
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if (entity instanceof CadLine) {
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CadLine line = (CadLine) entity;
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System.out.println(" 起点: (" + line.getFirstPoint().getX() + ", " + line.getFirstPoint().getY() + ")");
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System.out.println(" 终点: (" + line.getSecondPoint().getX() + ", " + line.getSecondPoint().getY() + ")");
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}
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} catch (Exception e) {
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System.err.println("打印实体信息失败: " + e.getMessage());
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}
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}
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}
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```
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## 📁 项目结构
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```
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problem/
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├── Aspose_CAD_Python_问题报告.md
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├── Java版本测试方案.md
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├── java/
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│ ├── src/
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│ │ └── main/
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│ │ └── java/
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│ │ └── DwgColorExtractor.java
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│ ├── pom.xml
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│ └── README.md
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└── test-files/
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├── 25-014.dwg
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└── 测试图纸文件.dwg
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```
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## 🚀 运行步骤
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### 1. 安装Java环境
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```bash
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# 下载并安装Java 8或11
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# 设置JAVA_HOME环境变量
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```
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### 2. 安装Maven
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```bash
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# 下载并安装Maven
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# 设置MAVEN_HOME环境变量
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```
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### 3. 创建Maven项目
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```bash
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mvn archetype:generate -DgroupId=com.example -DartifactId=dwg-extractor -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
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```
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### 4. 添加依赖
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在 `pom.xml` 中添加Aspose.CAD依赖。
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### 5. 运行测试
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```bash
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mvn compile exec:java -Dexec.mainClass="DwgColorExtractor"
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```
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## 🎯 预期结果
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如果Java版本工作正常，应该能够：
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1. 成功加载DWG文件
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2. 访问CAD实体（entities、blocks、layers）
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3. 提取特定颜色的元素
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4. 获取元素的详细信息（坐标、图层等）
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## 📝 注意事项
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1. **许可证**: Java版本也需要有效的许可证
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2. **性能**: Java版本可能有更好的性能
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3. **API差异**: Java版本的API可能与Python版本不同
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4. **依赖管理**: 需要正确配置Maven依赖
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## 🔗 相关链接
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- [Aspose.CAD for Java 文档](https://docs.aspose.com/cad/java/)
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- [Aspose.CAD for Java API 参考](https://reference.aspose.com/cad/java/)
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- [Maven 仓库](https://mvnrepository.com/artifact/com.aspose/aspose-cad)
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