最近在弄Security權限時遇到attemptAuthentication接口接收登入參數的時候隻能用request,但是現在很多項目都是已經使用前後端分離的開發模式了
像以往我們在Controller的時候處理json資料轉換隻需要标注@RequestBody注解即可.
有問題就要解決,打開debug找了一下request的字段内容,并沒有發現我所需要的Json資料,一時比較辣手,最後不得不面向Google程式設計了.
以下是工具類
public class GetRequestJsonUtils {
public static JSONObject getRequestJsonObject(HttpServletRequest request) throws IOException {
String json = getRequestJsonString(request);
return JSONObject.parseObject(json);
}
/***
* 擷取 request 中 json 字元串的内容
*
* @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:擷取 post 請求的 byte[] 數組
* <pre>
* 舉例:
* </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:擷取 post 請求内容
* <pre>
* 舉例:
* </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);
}
}
最後我們隻需要把request傳入GetRequestJsonUtils傳回一個JSONObject 對象.
JSONObject json = GetRequestJsonUtils.getRequestJsonObject(request);
String username = json.getString(usernameParameter);
String password = json.getString(passwordParameter);
原文位址:
https://blog.csdn.net/tengdazhang770960436/article/details/50149061