GET 和 POST方法获取请求实体内容

缺乏、安全感 2022-05-16 04:04 1695阅读 0赞

## java web获取请求体内容 ##

黄威的世界 2016-05-10 13:53:21 浏览3263 评论0

*  获取请求体截取请求体解析请求体querystring请求体内容

*摘要：* Java Web中如何获取请求体内容呢？ 我们知道请求方式分为两种：Get，Post Java代码   /\*\*\*       \* Compatible with GET and POST       \*        \* @param request       \* @return : <…

[Java Web][]中如何获取请求体内容呢？

我们知道请求方式分为两种：Get，Post

Java代码   ![收藏代码][icon_star.png]

1.  /\*\*\* 
2.       \* Compatible with GET and POST 
3.       \*  
4.       \* @param request 
5.       \* @return : <code>byte\[\]</code> 
6.       \* @throws IOException 
7.       \*/  
8.      public static byte\[\] getRequestQuery(HttpServletRequest request)  
9.              throws IOException \{  
10.         String submitMehtod = request.getMethod();  
11.         String queryString = null;  
12.   
13.         if (submitMehtod.equals(“GET”)) \{ // GET  
14.             queryString = request.getQueryString();  
15.             String charEncoding = request.getCharacterEncoding();// charset  
16.             if (charEncoding == null) \{  
17.                 charEncoding = ”UTF-8”;  
18.             \}  
19.             return queryString.getBytes(charEncoding);  
20.         \} else \{ // POST  
21.             return getRequestPostBytes(request);  
22.         \}  
23.     \}  
24.   
25. /\*\*\* 
26.      \* Get request query string, form method : post 
27.      \*  
28.      \* @param request 
29.      \* @return byte\[\] 
30.      \* @throws IOException 
31.      \*/  
32.     public static byte\[\] getRequestPostBytes(HttpServletRequest request)  
33.             throws IOException \{  
34.         int contentLength = request.getContentLength();  
35.         if(contentLength<0)\{  
36.             return null;  
37.         \}  
38.         byte buffer\[\] = new byte\[contentLength\];  
39.         for (int i = 0; i < contentLength;) \{  
40.   
41.             int readlen = request.getInputStream().read(buffer, i,  
42.                     contentLength - i);  
43.             if (readlen == -1) \{  
44.                 break;  
45.             \}  
46.             i += readlen;  
47.         \}  
48.         return buffer;  
49.     \}  
50. /\*\*\* 
51.      \* Get request query string, form method : post 
52.      \*  
53.      \* @param request 
54.      \* @return 
55.      \* @throws IOException 
56.      \*/  
57.     public static String getRequestPostStr(HttpServletRequest request)  
58.             throws IOException \{  
59.         byte buffer\[\] = getRequestPostBytes(request);  
60.         String charEncoding = request.getCharacterEncoding();  
61.         if (charEncoding == null) \{  
62.             charEncoding = ”UTF-8”;  
63.         \}  
64.         return new String(buffer, charEncoding);  
65.     \}

说明：当请求方式为“Get”时，直接使用request.getQueryString()获取String

当请求方式为“Post”时，读取InputStream（request.getInputStream()）

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