jsp、servlet、web.xml
jsp
<%
final String queryString = request.getQueryString();
final String url = request.getContextPath() + "/forwardServlet" + (queryString != null ? "?queryString=" + queryString : "");
response.sendRedirect(response.encodeURL(url));
%>
servlet
package com.msxf.sso.web.servlet;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
import com.msxf.sso.authentication.UserDaoJdbc;
public class ForwardServlet extends HttpServlet {
private static final long serialVersionUID = -3739784153645575408L;
private UserDaoJdbc userDaoJdbc;
private File file = null;
String outfile="";
/**
* 初始化 注入类
*/
public void init(ServletConfig config) throws ServletException {
ServletContext sc = config.getServletContext();
ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(sc);
userDaoJdbc = ctx.getBean(UserDaoJdbc.class);
super.init(config);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String getProject=request.getContextPath().replace("/", "\\");
String ptName=userDaoJdbc.getPtName();
String ptName2=userDaoJdbc.getPtName2();
String ptIconUrl=userDaoJdbc.getIconUrl();
System.out.println(ptIconUrl);
System.out.println(getProject+"\\"+ptIconUrl);
Object ptIconBLob=userDaoJdbc.getIconBlob();
if(ptIconUrl!=""){
this.initIcon(request, ptIconBLob, ptIconUrl);//在指定的路径下，读取Blob生成图片（sso工程与pf目前是分离的， 有必要从库中把图片初始化生成到sso工程中）
}
request.setAttribute("ptName",ptName);
request.setAttribute("ptName2",ptName2);
request.setAttribute("ptIconUrl",getProject+"\\"+ptIconUrl);
request.getRequestDispatcher("login").forward(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request,response);
}
/**
* 通过数据库Blob字段生成图片
* @param request
* @param photo
* @param iconUrl
* @throws IOException
*/
public void initIcon(HttpServletRequest request,Object photo,String iconUrl) throws IOException{
outfile=request.getSession().getServletContext().getRealPath("/")+iconUrl;
System.out.println(outfile);
FileOutputStream fos = null;
try{
byte[] Buffer = new byte[4096];
InputStream is = new ByteArrayInputStream((byte[]) photo);
int size = 0;
file = new File(outfile);
if(!file.exists()){
file.createNewFile(); //如果文件不存在，则创建
}
fos = new FileOutputStream(file);
while((size = is.read(Buffer)) != -1){
fos.write(Buffer,0,size);
}
fos.write(Buffer,0,1);
}catch(Exception e){
System.out.println("[OutPutFile error : ]" + e.getMessage());
}finally{
//关闭用到的资源
fos.close();
}
}
/**
* 读取资源文件信息
* @param filePath
* @throws IOException
*/
public String getProperties(String filePath,String strkey) throws IOException {
Properties pps = new Properties();
InputStream in = new BufferedInputStream(new FileInputStream(filePath));
pps.load(in);
String strValue = pps.getProperty(strkey);
return strValue;
}
}
web.xml
<servlet>
<servlet-name>ForwardServlet</servlet-name>
<servlet-class>com.msxf.sso.web.servlet.ForwardServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ForwardServlet</servlet-name>
<url-pattern>/forwardServlet</url-pattern>
</servlet-mapping>