这是ajax的代码
<script type="text/javascript">
function loadXMLDoc(username) {
var xmlhttp;
if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
} else {// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
} xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
var text = xmlhttp.responseText;
if (text == "1") {
document.getElementById("myDiv").innerHTML = xmlhttp.responseText;
}
}
}
xmlhttp.open("GET", "Demo", true);
xmlhttp.send(null);
}
</script>这样写的话 表示 如果Demo中的out.println()的内容为"1"时候 输出 Demo这个servlet中的out.println的内容吧
可是真心的输出不了啊。Demo里就一个doGet方法 里面就3行
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
System.out.println("ooo v587");
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("1");
out.flush();
out.close();
}web.xml都是自动生成的
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>Demo</servlet-name>
<servlet-class>Filter.Demo</servlet-class>
</servlet> <servlet-mapping>
<servlet-name>Demo</servlet-name>
<url-pattern>/servlet/Demo</url-pattern>
</servlet-mapping>真心求大神 帮助啊
<script type="text/javascript">
function loadXMLDoc(username) {
var xmlhttp;
if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
} else {// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
} xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
var text = xmlhttp.responseText;
if (text == "1") {
document.getElementById("myDiv").innerHTML = xmlhttp.responseText;
}
}
}
xmlhttp.open("GET", "Demo", true);
xmlhttp.send(null);
}
</script>这样写的话 表示 如果Demo中的out.println()的内容为"1"时候 输出 Demo这个servlet中的out.println的内容吧
可是真心的输出不了啊。Demo里就一个doGet方法 里面就3行
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
System.out.println("ooo v587");
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("1");
out.flush();
out.close();
}web.xml都是自动生成的
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>Demo</servlet-name>
<servlet-class>Filter.Demo</servlet-class>
</servlet> <servlet-mapping>
<servlet-name>Demo</servlet-name>
<url-pattern>/servlet/Demo</url-pattern>
</servlet-mapping>真心求大神 帮助啊
直接访问这个servlet可以访问得到,并输出“1”吗?
$.post("url",{参数},function(data){
这个data就是返回的值
},"text");