JSP结合js实现img中src更新请求的方法

<script type="text/javascript"> function changeimage(){ var img = document.getelementbyid("imgvcode"); if(img.name == 1){ img.name = 2; img.src = "shop.do?method=registerimage2"; }else if(img.name == 2){ img.name = 1; img.src = "shop.do?method=registerimage"; } } </script>

<td> <img class="yzm_img" id='imgvcode' name="1" src="shop.do?method=registerimage" /> <input name="code" type="text" id="txtverifycode" class="yzm_input" onblur="testcode(this)"/> <div class="text_left t1"> <p class="t1"> <span id="vcodevalidmsg">请输入图片中的四个字母。</span> <span id="codeinfo" style="color:red"></span> <a href="#" id="imgchange" onclick="changeimage()">看不清楚？换个图片</a> </p> </div> </td>

public actionforward registerimage(actionmapping mapping, actionform form, httpservletrequest request, httpservletresponse response) throws exception { //将image创建,返回认证码 response.setcontenttype("image/jpeg"); outputstream out = response.getoutputstream(); string strensure = shopmanager.createimageinfo(50,20,out); //设置到session中 request.getsession().setattribute("strensure", strensure); return null; } public actionforward registerimage2(actionmapping mapping, actionform form, httpservletrequest request, httpservletresponse response) throws exception { //将image创建,返回认证码 response.setcontenttype("image/jpeg"); outputstream out = response.getoutputstream(); string strensure = shopmanager.createimageinfo(50,20,out); //设置到session中 request.getsession().setattribute("strensure", strensure); return null; }