Json map

1. 返回数据形式

Class returnMsg{

boolean success;

String msg;

String errorMsg;

}

2.问题

当msg中的数据由对象或集合转换而来时，用JSONObject.fromObject(obj).toString()返回后带有'\'

3. 解决方案

将集合类型数据转换成jsonArray，用Map来存放数据，返回map

userList = accountManager.findDeptUser(deptId);
JsonConfig jsonConfig = new JsonConfig();jsonConfig.setExcludes(new String[]{"role"});jsonConfig.setIgnoreDefaultExcludes(true);jsonConfig.setCycleDetectionStrategy(CycleDetectionStrategy.LENIENT);
JSONArray jsonArray = JSONArray.fromObject(userList, jsonConfig);
Map<String, Object> resultMap = new HashMap<String, Object>();　　resultMap.put("success", true);  resultMap.put("msg", jsonArray);  resultMap.put("errmsg", "");

response.setHeader("Cache-Control", "no-cache");
response.setContentType("text/json; charset=UTF-8");
response.setCharacterEncoding("utf-8");
PrintWriter out = null;
        try {
            out = response.getWriter();
            out.print(JSONArray.fromObject(resultMap));
            out.flush();
        } catch (Exception e) {
        }finally{
            if(out!=null){
                out.close();
            }
        }