Java图片上传

@RequestMapping(params="upLoadPicture")

@ResponseBody

public String addFilemsgPic(MultipartFile file,HttpServletRequest request) throws Exception{

String path="../Manage_ssm/upLoadPicture";

//创建文件

File dir=new File(path);

if(!dir.exists()){

dir.mkdirs();

}

String username=(String) request.getSession().getAttribute("userName");

//返回原来在客户端的文件系统的文件名

String fileName=file.getOriginalFilename();

//username+后缀名

String img=username+fileName.substring(fileName.lastIndexOf("."));//zhao.jpg

FileOutputStream imgOut=new FileOutputStream(new File(dir,img));//根据 dir 抽象路径名和 img 路径名字符串创建一个新 File 实例。

imgOut.write(file.getBytes());//返回一个字节数组文件的内容

imgOut.close();

Map<String, String> map=new HashMap<String, String>();

String rpath = path+"/"+img;

map.put("rPath",rpath);

JSONObject jsonObject = JSONObject.fromObject(map);//将json字符串转换为json对象

String r=jsonObject.toString();

String s=URLEncoder.encode(r, "utf-8");//加密

return s;

}

@RequestMapping(params="pictureToDb")

@ResponseBody

public int pictureToDb(String src,HttpServletRequest request){

String newSrc = src.replace(" ", "+");

int flag=ConnOrcl.connToTable(newSrc,request);

if(flag==1)

return 1;

else

return 2;

}

public class ConnOrcl {

private static Connection conn;
private static Statement stat;
private static String driver = "oracle.jdbc.driver.OracleDriver";
private static int SUCCESS=1;
private static int FILE=2;
public static int connToTable(String file,HttpServletRequest request)
{
try
{
//数据库连接
Class.forName(driver);
conn = java.sql.DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:orcl", "GKBMFZXT", "GKBMFZXT");
stat = conn.createStatement();

String username=(String) request.getSession().getAttribute("userName");
String sql="update user_table set picture='"+file+"' where user_name='"+username+"'";
stat.execute(sql.toString());

return SUCCESS;
}
catch(ClassNotFoundException e)
{
e.printStackTrace();
}
catch(SQLException e)
{
e.printStackTrace();
}
finally
{
if(null != stat)
{
try
{
stat.close();
}
catch (SQLException e)
{
e.printStackTrace();
}
}
if(null != conn)
{
try
{
conn.close();
}
catch (SQLException e)
{
e.printStackTrace();
}
}
}
return FILE;
}
}

<script src="js/ajaxfileupload.js"></script>
<script type="text/javascript">
function upload(){

var file="file";
var picElement=document.getElementById(file).value;

var picFormat=picElement.substring(picElement.lastIndexOf('.')+1,picElement.length);
if(picFormat!="jpg"){
alert("请选择jpg 格式的文件!");
return;
}
$.ajaxFileUpload({
url:"user.do?upLoadPicture",
secureuri: false,
fileElementId:file,
dataType: 'JSON',
success:function(data){
data=decodeURIComponent(data);//解码
var arr=JSON.parse(data);//JSON.parse() 方法解析一个JSON字符串
$("#fsrc").val(arr.rPath);
$.post(
"user.do?pictureToDb&src="+$("#fsrc").val(),
function(data){
//data=decodeURIComponent(data);
//var arr=JSON.parse(data);
if(data==1){
alert("上传成功！");
}else{
alert("上传失败！");
}
}
);
},
error: function (){
alert("上传失败!当前时间为:"+new Date().toLocaleTimeString());

}
});
};
function findFile(){
document.getElementById("file").click();
}