截获POST或GET请求提交的所有参数

系统管理员 2022-09-18 07:51 217阅读 0赞

这里截获POST或GET请求提交的所有请求参数,并组成查询串返回

![ExpandedBlockStart.gif][] ![ContractedBlock.gif][]  /\*\* \*/ /\*\*  
![InBlock.gif][] \*  
![InBlock.gif][] \* 该方法用于将request中参数取出组成查询串后返回  
![InBlock.gif][] \*  
![InBlock.gif][] \* @param request  
![InBlock.gif][] \* HttpServletRequest  
![InBlock.gif][] \* @return String 返回key1=value1&key2=value形式的查询串  
![ExpandedBlockEnd.gif][]\*/   
![ExpandedBlockStart.gif][]![ContractedBlock.gif][] public  static  String getQueryString(HttpServletRequest request) ... \{  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]try...\{  
![InBlock.gif][]boolean first =true;  
![InBlock.gif][] StringBuffer strbuf =new StringBuffer("");  
![InBlock.gif][] Enumeration emParams = request.getParameterNames();  
![InBlock.gif][]  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]do...\{  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]if (!emParams.hasMoreElements()) ...\{  
![InBlock.gif][]break;  
![ExpandedSubBlockEnd.gif][] \}  
![InBlock.gif][] String sParam = (String) emParams.nextElement();  
![InBlock.gif][] String\[\] sValues = request.getParameterValues(sParam);  
![InBlock.gif][] String sValue ="";  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]for (int i =0; i < sValues.length; i\++) ...\{  
![InBlock.gif][] sValue = sValues\[i\];  
![InBlock.gif][]if (sValue !=null&& sValue.trim().length() !=0  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]&& first ==true) ...\{  
![InBlock.gif][] first =false;  
![InBlock.gif][] strbuf.append(sParam).append("=").append(  
![InBlock.gif][] URLEncoder.encode(sValue, GBK\_ENCODE));  
![ExpandedSubBlockEnd.gif][] \}  
![InBlock.gif][]elseif (sValue !=null&& sValue.trim().length() !=0  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]&& first ==false) ...\{  
![InBlock.gif][] strbuf.append("&").append(sParam).append("=").append(  
![InBlock.gif][] URLEncoder.encode(sValue, "GBK"));  
![ExpandedSubBlockEnd.gif][] \}  
![ExpandedSubBlockEnd.gif][] \}  
![ExpandedSubBlockEnd.gif][] \}  
![InBlock.gif][]while (true);  
![InBlock.gif][]  
![InBlock.gif][]return strbuf.toString();  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]\}catch(UnsupportedEncodingException e)...\{  
![InBlock.gif][]throw RuntimeException(e);  
![ExpandedSubBlockEnd.gif][]\}  
![ExpandedBlockEnd.gif][] \}

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