截取字符串
2018-08-18 本文已影响0人
神坛下的我
StringUtil3.java
public class StringUtil3 {
private String str;
public String getStr(){
if(str.length()>50){
return str.substring(0,50)+"...";
}
return str;
}
public void setStr(String str){
this.str=str;
}
}
index.jsp
<body>
<form action="result.jsp" method="post">
<table>
<tr height="35">
<td align="center">请输入留言：</td>
<td><textarea rows="5" cols="30" name="str"></textarea></td>
<td align="center"><input type="submit" value="提交"/></td>
</table>
</form>
</body>
result.jsp
<body>
<%
String str=request.getParameter("str");
%>
<jsp:useBean id="strBean" class="com.count.StringUtil3"></jsp:useBean>
<jsp:setProperty property="str" name="strBean" value="<%=str %>"/>
<table width="200">
<tr>
<td width="60" valign="top">留言内容:</td>
<td align="left"><jsp:getProperty property="str" name="strBean"/>
</td>
</table>
</body>
1.PNG
2.PNG
