最近在弄Security权限时遇到attemptAuthentication接口接收登录参数的时候只能用request,但是现在很多项目都是已经使用前后端分离的开发模式了
像以往我们在Controller的时候处理json数据转换只需要标注@RequestBody注解即可.
有问题就要解决,打开debug找了一下request的字段内容,并没有发现我所需要的Json数据,一时比较辣手,最后不得不面向Google编程了.
以下是工具类
public class GetRequestJsonUtils {
public static JSONObject getRequestJsonObject(HttpServletRequest request) throws IOException {
String json = getRequestJsonString(request);
return JSONObject.parseObject(json);
}
/***
* 获取 request 中 json 字符串的内容
*
* @param request
* @return : <code>byte[]</code>
* @throws IOException
*/
public static String getRequestJsonString(HttpServletRequest request)
throws IOException {
String submitMehtod = request.getMethod();
// GET
if (submitMehtod.equals("GET")) {
return new String(request.getQueryString().getBytes("iso-8859-1"),"utf-8").replaceAll("%22", "\"");
// POST
} else {
return getRequestPostStr(request);
}
}
/**
* 描述:获取 post 请求的 byte[] 数组
* <pre>
* 举例:
* </pre>
* @param request
* @return
* @throws IOException
*/
public static byte[] getRequestPostBytes(HttpServletRequest request)
throws IOException {
int contentLength = request.getContentLength();
if(contentLength<0){
return null;
}
byte buffer[] = new byte[contentLength];
for (int i = 0; i < contentLength;) {
int readlen = request.getInputStream().read(buffer, i,
contentLength - i);
if (readlen == -1) {
break;
}
i += readlen;
}
return buffer;
}
/**
* 描述:获取 post 请求内容
* <pre>
* 举例:
* </pre>
* @param request
* @return
* @throws IOException
*/
public static String getRequestPostStr(HttpServletRequest request)
throws IOException {
byte buffer[] = getRequestPostBytes(request);
String charEncoding = request.getCharacterEncoding();
if (charEncoding == null) {
charEncoding = "UTF-8";
}
return new String(buffer, charEncoding);
}
}
最后我们只需要把request传入GetRequestJsonUtils返回一个JSONObject 对象.
JSONObject json = GetRequestJsonUtils.getRequestJsonObject(request);
String username = json.getString(usernameParameter);
String password = json.getString(passwordParameter);
原文地址:https://blog.csdn.net/tengdazhang770960436/article/details/50149061