test.jsp
<body> <form action="test1.jsp" method="post"> 请输入字符串1：<input type="text" name="a" > 请输入字符串2：<input type="text" name="b" > <input type="submit" value="转换"> </form> </body>test1.jsp
<body> <% String a=request.getParameter("a"); String b=request.getParameter("b"); String c=a.concat(b);%> <%=c %> </body>b= Integer.parseInt(a);
<%String a=request.getParameter("num"); int b=0; b= Integer.parseInt(a); b+=1;%>