我正在提供包含表格详细信息的service.xml文件：
<entity name="Testimonial" local-service="true" remote-service="false">
<!-- PK fields -->
<column name="TestimonialId" type="long" primary="true" />
<!-- UI fields -->
<column name="subject" type="String" />
<column name="area" type="String" />
<column name="username" type="String" />
<column name="email" type="String" />
<column name="photo" type="String"/>
<column name="company" type="String" />
<column name="designation" type="String" />
<!-- Audit fields -->
<column name="createdAt" type="Date" />
这是我的java文件，其中我编写了在数据库中存储数据的逻辑：
public void updateTesti(ActionRequest actionRequest,ActionResponse actionResponse) throws IOException, PortletException
{
String subject = ParamUtil.getString(actionRequest,"subject");
String area = ParamUtil.getString(actionRequest,"area");
String username = ParamUtil.getString(actionRequest,"username");
String email = ParamUtil.getString(actionRequest,"email");
String company = ParamUtil.getString(actionRequest,"company");
String designation = ParamUtil.getString(actionRequest,"designation");
System.out.println("Your inputs ==> " + subject + ", " + area + ","
+ username + "," + email + "," + company + "," + designation);
Testimonial T1 = new TestimonialImpl();
// set primary key
long TestimonialId = 0L;
try {
TestimonialId =
CounterLocalServiceUtil.increment(
this.getClass().getName());
} catch (SystemException e) {
e.printStackTrace();
}
T1.setTestimonialId(TestimonialId);
UploadPortletRequest uploadRequest =
PortalUtil.getUploadPortletRequest(actionRequest);
String filePath = uploadRequest.getFileName("filePath");
try{
java.io.File file = uploadRequest.getFile("filePath");
//Manage the Upload
}catch (Exception e) {
///
}
// set UI fields
T1.setSubject(subject);
T1.setArea(area);
T1.setUsername(username);
T1.setEmail(email);
T1.setCompany(company);
T1.setDesignation(designation);
T1.setPhoto(filePath);
// set audit field(s)
T1.setCreatedAt(new Date());
// insert the book using persistence api
try {
TestimonialLocalServiceUtil.addTestimonial(T1);
} catch (SystemException e) {
e.printStackTrace();
}
}
告诉我我错在哪里以及缺少什么？
这是我的JSP代码：
<aui:form name="fm" method="POST" action="<%= updateTestiURL.toString() %>">
<aui:input name="subject" label="Subject"/>
<aui:input type="textarea" name="area" label="your Testimonial" />
<aui:input name="username" label="Username"/>
<aui:input name="email" label="Email"/>
<aui:input type="file" label="upload your file" name="filePath" />
<aui:input name="company" label="Company"/>
<aui:input name="designation" label="Designation"/>
<aui:button type="submit" value="Save"/>
答案 0 :(得分：1)
我不认为存储图像的路径是个好主意。即使您从一台计算机上传了它们，也可以访问该路径并使用完整路径，这可能不是您的情况。
由于你可以得到一个java.io.File，你可以检索一个InputStream，并使用bytes []并将它们存储为Text / String或类似于Blob的东西。
您可以在Liferay的ImageLocalServiceImpl类的源代码中查看它是如何使用这些资源的
编辑：提示输入InputStream
InputStream str = (InputStream)uploadRequest.getFileAsStream("filePath", false);
答案 1 :(得分：0)
可以使用servlet完成此任务... 这是我的form.jsp文件
html>
<body>
<form id="staff_feedbackform" method="post" action="uploadServlet" enctype="multipart/form-data" class="register">
Select Photo:<input type="file" name="photo">
<p><label> NAME:</label><input type="text" name="name" /></p>
<p><label>EMPLOYEE ID:</label><input type="text" name="id"/></p>
<p><label>E-MAIL ID:</label><input type="email" name="email"></p>
<p><label><input id="gobutton" type="submit" value="SUBMIT" class="submit" /> </label></p>
</form>
</body>
这是我的servlet文件
@WebServlet("/FileUploadDBServlet")
@MultipartConfig(maxFileSize = 10177215) // upload file's size up to 16MB
public class FileUploadDBServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public FileUploadDBServlet() {
super();
}
private final String dbURL = "jdbc:mysql://localhost:3306/test";
private final String dbUser = "root";
private final String dbPass = "";
protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
String name=request.getParameter("name");
String id=request.getParameter("id");
String email=request.getParameter("email");
InputStream inputStream = null; // input stream of the upload file
// obtains the upload file part in this multipart request
Part filePart = request.getPart("photo");
if (filePart != null) {
// prints out some information for debugging
System.out.println(filePart.getName());
System.out.println(filePart.getSize());
System.out.println(filePart.getContentType());
// obtains input stream of the upload file
inputStream = filePart.getInputStream();
}
Connection conn = null; // connection to the database
String message = null; // message will be sent back to client
try {
// connects to the database
DriverManager.registerDriver(new com.mysql.jdbc.Driver());
HttpSession session=request.getSession(false);
conn = (Connection) DriverManager.getConnection(dbURL,dbUser,dbPass);
// constructs SQL statement
Statement st=conn.createStatement();
String sql = "INSERT INTO file1(id,name,email,photo) values (?,?,?,?)";
PreparedStatement statement = conn.prepareStatement(sql);
statement.setString(1,id);
statement.setString(2,name );
statement.setString(3,email );
if (inputStream != null) {
// fetches input stream of the upload file for the blob column
statement.setBlob(4, inputStream);
}
// sends the statement to the database server
int row = statement.executeUpdate();
if (row > 0) {
message = "File uploaded and saved into database";
out.println("uploades succesfully");
System.out.println("uploades succesfully");
}
}
catch (SQLException ex) {
System.out.println(ex);
message = "ERROR: " + ex.getMessage();
}
}
}
表file1的表结构
DROP TABLE IF EXISTS `file1`;
CREATE TABLE IF NOT EXISTS `file1` (
`id` varchar(100) NOT NULL,
`name` varchar(100) NOT NULL,
`email` varchar(100) NOT NULL,
`photo` longblob NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
这是我的servlet映射代码包含web.xml
<servlet>
<servlet-name>uploadServlet</servlet-name>
<servlet-class>com.servlet.FileUploadDBServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>uploadServlet</servlet-name>
<url-pattern>/uploadServlet</url-pattern>
</servlet-mapping>
这是检索图像的一部分，这是我的show_image.jsp
<%
String id="1250";
session.setAttribute("num", id);
%>
<body>
<image src="display.jsp" border="0" height="200px" width="200px" alt="NO PIC"/>
</body>
这里我通过dispaly.jsp文件外部引用图像
<% Blob image = null;
String no=(String)session.getAttribute("num");
byte[ ] imgData = null ;
Statement stmt = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.jdbc.Driver");
Connection con = (Connection); DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","");
stmt = con.createStatement();
rs = stmt.executeQuery("select photo from file1 where id = '"+no+"'");
if (rs.next()) {
image = rs.getBlob(1);
imgData = image.getBytes(1,(int)image.length());
} else {
out.println("Display Blob Example");
out.println("image not found for given id");
return;
}
// display the image
response.setContentType("image/gif");
OutputStream o = response.getOutputStream();
o.write(imgData);
o.flush();
o.close();
} catch (Exception e) {
out.println("Unable To Display image");
out.println("Image Display Error=" + e.getMessage());
return;
} finally {
try {
rs.close();
stmt.close();
} catch (SQLException e) {
System.out.println(e);
e.printStackTrace();
}
}
%>