我想开发restful服务,它会将JSON String返回给客户端.现在我的对象中有byte []属性.
我使用ObjectMapper将此对象转换为json并响应客户端.但是如果我使用String.getBytes()来翻译接收到的字符串,我发现byte []是错误的.以下是示例.
Pojo课程
public class Pojo {
private byte[] pic;
private String id;
//getter, setter,...etc
}
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准备数据:使用image获取字节数组
InputStream inputStream = FileUtils.openInputStream(new File("config/images.jpg"));
byte[] pic = IOUtils.toByteArray(inputStream);
Pojo pojo = new Pojo();
pojo.setId("1");
pojo.setPic(pic);
ObjectMapper mapper = new ObjectMapper();
String json = mapper.writeValueAsString(pojo);
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--Situation 1:使用readvalue对象=> image2.jpg是正确的
Pojo tranPojo = mapper.readValue(json, Pojo.class);
byte[] tranPicPojo = tranPojo.getPic();
InputStream isPojo = new ByteArrayInputStream(tranPicPojo);
File tranFilePojo = new File("config/images2.png");
FileUtils.copyInputStreamToFile(isPojo, tranFilePojo);
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--Situation 2:使用readvalue来映射并得到String => image3.jpg被破坏了
Map<String, String> map = mapper.readValue(json, …Run Code Online (Sandbox Code Playgroud)