10-过滤输入字符串中的危险字符（字符串处理）

StringUtil.java

package com.lh.bean;

public class StringUtil {
	// 源字符串
	private String sourceStr;
	// 替换后的字符串
	private String targetStr;

	public String getSourceStr() {
		return sourceStr;
	}

	public void setSourceStr(String sourceStr) {
		this.sourceStr = sourceStr;
	}

	public String getTargetStr() {
		// 过滤字符&；‘〈〉/%=
		sourceStr = sourceStr.replaceAll("&", "&");
		sourceStr = sourceStr.replaceAll(";", ",");
		sourceStr = sourceStr.replaceAll("'", "");
		sourceStr = sourceStr.replaceAll("<", "<");
		sourceStr = sourceStr.replaceAll(">", ">");
		sourceStr = sourceStr.replaceAll("/", "");
		sourceStr = sourceStr.replaceAll("%", "");
		sourceStr = sourceStr.replaceAll("=", "");
		targetStr = sourceStr;
		return targetStr;
	}

	public void setTargetStr(String targetStr) {
		this.targetStr = targetStr;
	}

}

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>






	

		

			

				
请输入字符串：
				

				
			
			

				

				
			
		
	

 

filter.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>







	<%
		String sourceStr = request.getParameter("sourceStr");
	%>
	
	
	
	
	

		

			
过滤之前的字符串：
			

				 
		
		

			
过滤之后的字符串：