StringEscapeUtilsを使用してJava内の特殊文字をエスケープし、エスケープします.

1、引用jarパッケージ:commons-lang.jar
2、例:

import org.apache.commons.lang.StringEscapeUtils; 
public class Test { 
    public static void main(String[] args) { 

        String str = "thi is a test       ";
		String xml = "
"
				+ "
" + " 
"
				+ "    
" + " 26
" + "
"
				+ " 
" + "   
"
				+ " 25
" + " 
" + "";
		System.out.println(" escapeJava           :"
				+ StringEscapeUtils.escapeJava(str));
		System.out.println(" unescapeJava            :"
				+ StringEscapeUtils.unescapeJava(StringEscapeUtils
						.escapeJava(str)));
		System.out.println(" escapeHtml           :"
				+ StringEscapeUtils.escapeHtml(str));
		System.out.println(" unescapeHtml            :"
				+ StringEscapeUtils.unescapeHtml(StringEscapeUtils
						.escapeHtml(str)));
		System.out.println(" escapeXml           :"
				+ StringEscapeUtils.escapeXml(xml));
		System.out.println(" unescapeXml            :"
				+ StringEscapeUtils.unescapeXml(StringEscapeUtils
						.escapeXml(xml)));
		System.out.println(" escapeJavaScript           :"
				+ StringEscapeUtils.escapeJavaScript(str));
		System.out.println(" unescapeJavaScript            :"
				+ StringEscapeUtils.unescapeJavaScript(StringEscapeUtils
						.unescapeJavaScript(str)));
    }
}

3、運行結果:

 escapeJava           :thi is a test \u8FD9\u662F\u4E00\u4E2A\u6D4B\u8BD5  unescapeJava            :thi is a test        
 escapeHtml           :thi is a test        
 unescapeHtml            :thi is a test        
 escapeXml           :<?xml version="1.0" encoding="UTF-8"?> <persons> <person id="23"> <name>   </name> <age>26</age> </person> <person id="22"> <name>  </name> <age>25</age> </person> </persons> 
 unescapeXml            :       26      25   
 escapeJavaScript           :thi is a test \u8FD9\u662F\u4E00\u4E2A\u6D4B\u8BD5  unescapeJavaScript            :thi is a test