Cara menampilkan gambar (tipe bolb) di halaman jsp dari mySql DB di Struts 2 menggunakan Hibernate

Saya menggunakan yang berikut ini untuk merender gambar dari JPA (Hibernate Backed) contoh menggunakan struts2-conventions-plugin, dalam hasil jenis anotasi "stream" adalah semua yang ada untuk tampilan:

package com.kenmcwilliams.photogallery.action.gallery;

import com.kenmcwilliams.photogallery.orm.Picture;
import com.kenmcwilliams.photogallery.orm.PictureDetails;
import com.kenmcwilliams.photogallery.service.Gallery;
import com.opensymphony.xwork2.ActionSupport;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.beans.factory.annotation.Autowired;

@Result(type = "stream", params = {
    "contentType", "${contentType}",
    "contentLength", "${contentLength}",
    "contentDisposition", "${contentDisposition}",
    "inputStream", "${inputName}",
    "bufferSize", "${bufferSize}",
    "allowCaching", "${allowCaching}"
})
public class Stream extends ActionSupport {
    @Autowired private Gallery gallery; 
    private String contentType = "text/plain";
    private int contentLength = 0;
    private String contentDisposition = "inline";
    private InputStream inputStream;
    public String inputName = "inputStream";//This should not be required
    private Integer bufferSize = 1024;
    private String allowCaching = "true";
    private Integer id = null;

    @Override
    public String execute() {
        if (id != null){
            //gallery.get
            PictureDetails details = gallery.getPictureDetails(id);
            Picture photo = details.getPictureId();
            this.contentType = details.getContentType();
            System.out.println("Content Type: " + contentType);
            ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(photo.getPicture());
            this.contentLength = photo.getPicture().length;
            System.out.println("Content Length: " + contentLength);
            this.inputStream = byteArrayInputStream;
        }else{
            return ERROR;
        }
        return SUCCESS;
    }

    /**
     * @return the contentType
     */
    public String getContentType() {
        return contentType;
    }

    /**
     * @param contentType the contentType to set
     */
    public void setContentType(String contentType) {
        this.contentType = contentType;
    }

    /**
     * @return the contentLength
     */
    public int getContentLength() {
        return contentLength;
    }

    /**
     * @param contentLength the contentLength to set
     */
    public void setContentLength(int contentLength) {
        this.contentLength = contentLength;
    }

    /**
     * @return the contentDisposition
     */
    public String getContentDisposition() {
        return contentDisposition;
    }

    /**
     * @param contentDisposition the contentDisposition to set
     */
    public void setContentDisposition(String contentDisposition) {
        this.contentDisposition = contentDisposition;
    }

    /**
     * @return the bufferSize
     */
    public int getBufferSize() {
        return bufferSize;
    }

    /**
     * @return the allowCaching
     */
    public String getAllowCaching() {
        return allowCaching;
    }

    /**
     * @param allowCaching the allowCaching to set
     */
    public void setAllowCaching(String allowCaching) {
        this.allowCaching = allowCaching;
    }

    /**
     * @return the inputStream
     */
    public InputStream getInputStream() {
        return inputStream;
    }

    /**
     * @param inputStream the inputStream to set
     */
    public void setInputStream(InputStream inputStream) {
        this.inputStream = inputStream;
    }

    /**
     * @return the id
     */
    public int getId() {
        return id;
    }

    /**
     * @param id the id to set
     */
    public void setId(int id) {
        this.id = id;
    }
}

Anda juga bertanya tentang bagaimana menampilkan di atas, berikut ini adalah JSP yang digunakan untuk menampilkan galeri gambar (sehingga tindakan akan memberikan JSP ini dengan id gambar yang tindakan di atas akan digunakan untuk mendapatkan gambar dari DB dan judul Galeri).

Jika saya ingat dengan benar galeri ini menampilkan empat gambar lebar dengan baris sebanyak yang diperlukan untuk menampilkan semua gambar.

<%@taglib prefix="s" uri="/struts-tags"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <h1><s:property value="photoGallery.name"/></h1>
        <table>
            <s:iterator begin="0" end="pictureDetails.size/4" var="row">
                <tr>
                    <s:subset source="pictureDetails" start="4 * #row" count="4">
                        <s:iterator>
                            <s:url forceAddSchemeHostAndPort="true" namespace="/gallery" action="stream" var="streamURL">
                                <s:param name="id" value="id"/>
                            </s:url>
                            <td>
                                <s:a value="%{#streamURL}"><img width="200px" src="<s:property value="#streamURL"/>"/></s:a>
                            </td>
                        </s:iterator>
                    </s:subset>
                </tr>
            </s:iterator>
        </table>
    </body>
</html>

Pada baris di atas ini mungkin bagian ini mungkin yang Anda inginkan:

<img width="200px" src="<s:property value="#streamURL"/>"/>