java 将 JSON 添加到 Spring Rest 控制器中的模型时如何删除转义字符
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How to remove escape characters when JSON is added to model in spring rest controller
提问by Anand Sai Krishna
I am fetching JSON stored in DB (JSON is stored as a string in DB) and adding it to the model object in the controller.
我正在获取存储在 DB 中的 JSON（JSON 作为字符串存储在 DB 中）并将其添加到控制器中的模型对象中。
@RequestMapping( method = RequestMethod.GET, value = "/all" )
public void getJson(HttpServletRequest httpServletRequest, Model model){
String json = serviceDao.getResponseJson();
System.out.println(json); //Output: {"Response":[{"Id":"1","Name":"GAD"},{"Id":"2","Name":"GBD"}],"Status":"Success"}
model.addAttribute("result",json);
}
But when I invoke the service from a browser, escape characters are added the response.
但是当我从浏览器调用服务时，响应中添加了转义字符。
http://localhost:8080/MyApplication/all.json
{"result":"{\"Response\":[{\"Id\":\"1\",\"Name\":\"GAD\"},{\"Id\":\"2\",\"Name\":\"GBD\"}],\"Status\":\"Success\"}"}
http://localhost:8080/MyApplication/all.json
{"result":"{\"Response\":[{\"Id\":\"1\",\"Name\":\"GAD\"},{\"Id\":\"2 \",\"名称\":\"GBD\"}],\"状态\":\"成功\"}"}
Can you please help me on the way to send the JSON object to the client in a webservice without escape characters.
您能否帮助我在没有转义字符的情况下将 JSON 对象发送到 Web 服务中的客户端。
采纳答案by Angelo Angeles
Instead of adding the string to model return JSON directly
而不是将字符串添加到模型直接返回 JSON
@RequestMapping(value="/all")
public @ResponseBody String getJson(){
//Logic
return json;
}
回答by Karan Nassa
It will work definitely.
它肯定会起作用。
String str = "result':'\'\'Respon'";
String result = str.replaceAll("\\'", "");
Log.e("Result",result);
回答by Naman Gala
If you are using spring, you can use @ResponseBodyand directly return your class object instead of String.
如果您使用的是 spring，则可以使用@ResponseBody并直接返回您的类对象而不是 String。
You can refer example given in this link.
您可以参考此链接中给出的示例。
Also don't forget to include maven dependency.
也不要忘记包含 maven 依赖项。
<dependency>
<groupId>org.codehaus.Hymanson</groupId>
<artifactId>Hymanson-mapper-asl</artifactId>
<version>1.9.12</version>
</dependency>
回答by Guilherme Arthur de Carvalho
You can use replaceAll:
您可以使用 replaceAll：
String json = serviceDao.getResponseJson();
if (json != null && !json.isEmpty()) {
model.addAttribute("result", json.replaceAll("\\", ""));
}
