本文实例讲述了java实现的简单图片上传功能。分享给大家供大家参考，具体如下：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
import java.io.*;
import java.net.*;
/*
*发送端
*/
class picsend
{
public static void main(string[] args) throws exception
{
if(args.length!=1)
{
system.out.println("请选择一张.jpg图片");
return;
}
file file = new file(args[0]);
if (!(file.exists() && file.isfile()))
{
system.out.println("图片有问题(不是文件或不存在)");
return;
}
if(!file.getname().endswith(".jpg"))
{
system.out.println("图片格式不对，请重新选择图片");
return;
}
if(file.length()>1024*1024*10)
{
system.out.println("图片过大，无法上传");
return;
}
socket s = new socket("192.168.33.1",10006);//建立服务
fileinputstream fis = new fileinputstream("d:\\美女.jpg");//读取图片
outputstream out = s.getoutputstream();//读到的写入
byte [] b = new byte[1024];
int len = 0;
while((len = fis.read(b))!= -1)
{
out.write(b,0,len);
}
s.shutdownoutput();//标记结束
inputstream in = s.getinputstream();//读服务端返回数据
byte [] bin = new byte[1024];
int num = in.read(bin);
system.out.println(new string(bin,0,num));
fis.close();
s.close();
}
}
class picthread implements runnable
{
private socket s;
picthread(socket s)
{
this.s = s;
}
public void run()
{
int count = 1;
string ip = s.getinetaddress().gethostaddress();//得到ip
try
{
system.out.println(ip+".............connect");
inputstream in = s.getinputstream();//读到流中数据
file file = new file(ip+"("+(count)+")"+".jpg");
while(file.exists())//判断文件是否存在
file = new file(ip+"("+(count++)+")"+".jpg");
fileoutputstream fos = new fileoutputstream(file);//写入
byte [] b = new byte[1024];
int len = 0;
while((len = in.read(b))!=-1)
{
fos.write(b,0,len);
}
outputstream out = s.getoutputstream();//写入服务端传过来数据
out.write("上传成功！".getbytes());
fos.close();
s.close();
}
catch (exception e)
{
throw new runtimeexception("上传失败");
}
}
}
/*
*服务端
*/
class picrece
{
public static void main(string[] args) throws exception
{
serversocket ss = new serversocket(10006);
while(true)
{
socket s = ss.accept();//接收
new thread(new picthread(s)).start();
}
}
}
|
运行效果图如下：
希望本文所述对大家java程序设计有所帮助。
原文链接：http://blog.csdn.net/chaoyu168/article/details/49902909