Java 我想从jsp页面调用servlet
这是我的jsp代码。在表单标记中,需要action属性same.jsp页面如何从这个jsp调用FileUploadExampleServletJava 我想从jsp页面调用servlet,java,jsp,Java,Jsp,这是我的jsp代码。在表单标记中,需要action属性same.jsp页面如何从这个jsp调用FileUploadExampleServlet <form id="beneficiary_sales_details" name="beneficiary_sales_details" action="beneficiary_sales_details.jsp" autocomplete="off" method="post"> <input type="file"
<form id="beneficiary_sales_details" name="beneficiary_sales_details"
action="beneficiary_sales_details.jsp" autocomplete="off" method="post">
<input type="file" id="datafile" name="datafile" size="40" />
<input type="button" id="cmdUpload" value="Upload" onclick = "unloadEvt();" />
这是要调用的servlet。但是我无法从受益人\u sales\u details.jsp调用此servlet。请建议我从jsp调用servlet的任何其他选项
public class FileUploadExample extends HttpServlet {
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
response.setContentType("text/html");
PrintWriter out = response.getWriter();
System.out.println("In fileupload servlet");
if (isMultipart) {
// Create a factory for disk-based file items
FileItemFactory factory = new DiskFileItemFactory();
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
try {
// Parse the request
List /* FileItem */ items = upload.parseRequest(request);
Iterator iterator = items.iterator();
while (iterator.hasNext()) {
FileItem item = (FileItem) iterator.next();
if (!item.isFormField())
{
String fileName = item.getName();
String root = getServletContext().getRealPath("/");
File path = new File(root + "/uploads");
if (!path.exists())
{
boolean status = path.mkdirs();
}
File uploadedFile = new File(path + "/" + fileName);
System.out.println(uploadedFile.getAbsolutePath());
System.out.println(uploadedFile.getTotalSpace());
// bytesray = uploadedFile.length();
byte[] b = new byte[(int)uploadedFile.length()];
for (int i = 0; i < b.length; i++) {
// System.out.print(b[i]);
}
String str = b.toString();
System.out.println(" byte array in string---"+str);
out.println("<h1>"+str+"</h1>");
if(fileName!="")
item.write(uploadedFile);
else
out.println("file not found");
out.println("<h1>File Uploaded Successfully....:-)</h1>");
}
else
{
String abc = item.getString();
out.println("<br><br><h1>"+abc+"</h1><br><br>");
}
}
} catch (FileUploadException e) {
out.println(e);
} catch (Exception e) {
out.println(e);
}
}
else
{
out.println("Not Multipart");
}
}
公共类FileUploadExample扩展了HttpServlet{
@凌驾
受保护的void doPost(HttpServletRequest请求、HttpServletResponse响应)
抛出ServletException,IOException{
布尔值isMultipart=ServletFileUpload.isMultipartContent(请求);
response.setContentType(“text/html”);
PrintWriter out=response.getWriter();
System.out.println(“In-fileupload servlet”);
如果(isMultipart){
//为基于磁盘的文件项创建工厂
FileItemFactory=new DiskFileItemFactory();
//创建新的文件上载处理程序
ServletFileUpload upload=新的ServletFileUpload(工厂);
试试{
//解析请求
List/*FileItem*/items=upload.parseRequest(请求);
迭代器迭代器=items.Iterator();
while(iterator.hasNext()){
FileItem=(FileItem)迭代器.next();
如果(!item.isFormField())
{
字符串文件名=item.getName();
字符串root=getServletContext().getRealPath(“/”);
文件路径=新文件(根+“/上载”);
如果(!path.exists())
{
布尔状态=path.mkdirs();
}
文件上传文件=新文件(路径+“/”+文件名);
System.out.println(uploadedFile.getAbsolutePath());
System.out.println(uploadedFile.getTotalSpace());
//bytesray=uploadedFile.length();
byte[]b=新字节[(int)uploadedFile.length()];
for(int i=0;i”+abc+“
”); } } }捕获(文件上载异常){ out.println(e); }捕获(例外e){ out.println(e); } } 其他的 { out.println(“非多部分”); } }
}调用servlet需要以下步骤
<servlet>
<servlet-name>MyServlet</servlet-name>
<servlet-class>mypackage.MyServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MyServlet</servlet-name>
<url-pattern>/MyServlet</url-pattern>
</servlet-mapping>
这将导致应用程序调用servlet并立即将您返回到原始servlet。
你可以调用你想要的函数,你甚至不会注意到 调用servlet需要以下步骤
<servlet>
<servlet-name>MyServlet</servlet-name>
<servlet-class>mypackage.MyServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MyServlet</servlet-name>
<url-pattern>/MyServlet</url-pattern>
</servlet-mapping>
这将导致应用程序调用servlet并立即将您返回到原始servlet。
你可以调用你想要的函数,你甚至不会注意到 您可以使用
进行此操作
<jsp:include page="/servletURL" />
在/WEB-INF/result.jsp中
<p>The result is ${result}</p>
然后将调用其doPost()
方法
另请参见:
您可以使用
进行此操作
<jsp:include page="/servletURL" />
在/WEB-INF/result.jsp中
<p>The result is ${result}</p>
然后将调用其doPost()
方法
另请参见:
您可以通过两个步骤完成类似操作
1.将action属性更改为servlet位置
2.只需将按钮类型更改为“提交”
您可以通过两个步骤完成类似操作
1.将action属性更改为servlet位置
2.只需将按钮类型更改为“提交”
也许这是有用的:也许这是有用的:我想要相同的jsp页面动作属性。从jspI调用servlet的任何其他解决方案想要相同的jsp页面动作属性。从jspI调用servlet的任何其他解决方案想要通过单击上载按钮调用servlet我想要通过单击上载按钮调用servlet
<p>The result is ${result}</p>
<form action="servletURL" method="post">