ProtoBuf和LomBox - VA伐木累

ProtoBuf和LomBox
•发布于 •作者 liuzy •2119 次浏览 •最后一次编辑是 •来自资讯

## ProtoBuf
- 1.下载`protoc.exe`可执行程序直接解压到windows目录，[https://github.com/google/protobuf/releases](https://github.com/google/protobuf/releases)
- 2.下载Eclipse插件`protobuf-dt`
- 3.下载Eclipse插件`proto file editor`，高亮`proto文件`语法
- 4.在`src/main/java`下使用`protoc com/example/demo/proto/UserProto.proto --java_out=.`生成JAVA类
- 5.项目添加依赖，导入
```xml
<dependency>
	<groupId>com.google.protobuf</groupId>
	<artifactId>protobuf-java</artifactId>
	<version>3.5.1</version>
</dependency>
```

## LomBox
- 1.下载`lombox.jar`放入Eclipse目录，配置`eclipse.ini`
```ini
-Xbootclasspath/a:lombok.jar
-javaagent:lombok.jar
```
- 2.项目添加依赖使用lombox注解，导入
```xml
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
</dependency>
```

### xxx

```java
package com.example.demo;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.nio.charset.StandardCharsets;

import org.springframework.http.HttpInputMessage;
import org.springframework.http.HttpOutputMessage;
import org.springframework.http.MediaType;
import org.springframework.http.converter.AbstractHttpMessageConverter;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.http.converter.HttpMessageNotWritableException;

import com.google.protobuf.GeneratedMessage;

public class PBMessageConverter extends AbstractHttpMessageConverter<GeneratedMessage> {

public PBMessageConverter() {
		super(new MediaType("application", "x-protobuf", StandardCharsets.UTF_8));
	}

@Override
	protected boolean supports(Class<?> clazz) {
		return GeneratedMessage.class.isAssignableFrom(clazz);
	}

@Override
	protected GeneratedMessage readInternal(Class<? extends GeneratedMessage> clazz, HttpInputMessage inputMessage)
			throws IOException, HttpMessageNotReadableException {
		try {
			Method parseMethod = clazz.getDeclaredMethod("parseFrom", InputStream.class);
			return (GeneratedMessage) parseMethod.invoke(clazz, inputMessage.getBody());
		} catch (NoSuchMethodException e) {
			e.printStackTrace();
		} catch (SecurityException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			e.printStackTrace();
		}
		return null;
	}

@Override
	protected void writeInternal(GeneratedMessage t, HttpOutputMessage outputMessage)
			throws IOException, HttpMessageNotWritableException {
		OutputStream os = outputMessage.getBody();
		t.writeTo(os);
		os.flush();
		os.close();
	}

@Override
	protected Long getContentLength(GeneratedMessage t, MediaType contentType) {
		return Long.valueOf(t.toByteArray().length);
	}

}
```

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作者

liuzy

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作者其他话题

SonarQube 9.4 + PostgreSQL

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