在jsp中显示图像

时间:2016-05-06 06:51:01

标签: java jsp servlets

我使用servlet从数据库中获取数据并在JSP中显示。我得到了字符串,但没有得到图像。

我得到这样的输出:English [B@12fd16f

这是我的servlet类:

@WebServlet("/ReadFindServlet")
 public class ReadFindServlet extends HttpServlet {

private static final long serialVersionUID = 1L;

private List<Find> findList = new ArrayList<>();    

public List<Find> getFindList() {
    return findList;
}

public void setFindList(List<Find> findList) {
    this.findList = findList;
}   

/**
 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
 */
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    // TODO Auto-generated method stub
    ResultSet resultSet = null;

    try {

    resultSet = LoginDao.readFind();

    while(resultSet.next()){
        Find find = new Find();

        find.setSubject(resultSet.getString(1));                
        find.setImage(resultSet.getBytes(2));

        response.setContentType("image/jpeg");              


        findList.add(find);

    }
    setFindList(findList);          

    request.setAttribute("findList", findList);
    RequestDispatcher requestDispatcher = request.getRequestDispatcher("jsp/find.jsp");
    requestDispatcher.forward(request, response);

    } catch (ClassNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    } catch (SQLException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    }
}
}

Find.java

public class Find {

private String subject;
private byte[] image;

public String getSubject() {
    return subject;
}
public void setSubject(String subject) {
    this.subject = subject;
}
public byte[] getImage() {
    return image;
}
public void setImage(byte[] image) {
    this.image = image;
}

}

jsp -

<c:forEach items="${findList}" var="findRecord">
     <h1>Here are details - </h1>                 
     ${findRecord.subject}                 
     <img src="/ReadFindServlet"${findRecord.image }/>
</c:forEach>

我也试过了 -

    <img src="/ReadFindServlet/${findRecord.image }"/>
    <img src="{findRecord.image }"/>

但没效果。

请帮忙。

0 个答案:

没有答案