textareaconventer.java

使用JSP+Servlet+Hibernate+Struts实现的一个学生软件发布平台

package edu.neu.sspp;

/**
 * 
 * @author wangzhong
 * 
 */
public class TextAreaConventer {
	//将输入的字符进行处理,在html中保持原有格式
	public static String convertToHtml(String str) {
		StringBuffer newString = new StringBuffer(str);

		int index  = newString.indexOf(">");
		while(index != -1) {
			newString.replace(index, index + 1, "&gt");
			index = newString.indexOf(">", index);
		}
		
		index = newString.indexOf("<");
		while(index != -1) {
			newString.replace(index, index + 1, "&lt");
			index = newString.indexOf(">", index);
		}
		
		index = newString.indexOf("\n");
		while(index != -1) {
			newString.replace(index, index + 1, "<br>");
			index = newString.indexOf("\n", index);
		}
		
		index = newString.indexOf(" ");
		while(index != -1) {
			newString.replace(index, index + 1, "&nbsp");
			index = newString.indexOf(" ", index);
		}

		
		return newString.toString();
	}
}