java json 简单例子

 
 
 
 
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.JsonProcessingException;
 
 
 
 
Map<String, Object> msgJson = new HashMap<String, Object>();
if (isend == true) {
	msgJson.put("isend", 1);
}else{
	msgJson.put("isend", 0);
}
ObjectMapper mapper = new ObjectMapper();
byte[] msgJsonByte = mapper.writeValueAsBytes(msgJson);

//编码json为byte数组
ObjectMapper mapper = new ObjectMapper();
byte[] msgJsonByte = mapper.writeValueAsBytes(msgJson);

//解码byte数组为json格式
ObjectMapper mapper = new ObjectMapper();
msgjson = mapper.readValue(msg, HashMap.class);
if (1 == (Integer) msgJsonRece.get("refresh")) {
return ((String) msgJsonRece.get("text")).getBytes();
}

 
 

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转载自blog.csdn.net/chujiangkedejiushu/article/details/78753141