本文实例为大家分享了ajaxfileupload异步上传插件的使用方法,供大家参考,具体内容如下
所需环境: jquery.js ajaxfileupload.js struts2所依赖的jar包 及struts2-json-plugin-2.1.8.1.jar
import java.io.FileInputStream;
import java.io.FileOutputStream;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
@SuppressWarnings("serial")
public class FileAction extends ActionSupport {
private File file;
private String fileFileName;
private String fileFileContentType;
private String message = "你已成功上传文件";
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public File getFile() {
return file;
}
public void setFile(File file) {
this.file = file;
}
public String getFileFileName() {
return fileFileName;
}
public void setFileFileName(String fileFileName) {
this.fileFileName = fileFileName;
}
public String getFileFileContentType() {
return fileFileContentType;
}
public void setFileFileContentType(String fileFileContentType) {
this.fileFileContentType = fileFileContentType;
}
@SuppressWarnings("deprecation")
@Override
public String execute() throws Exception {
String path = ServletActionContext.getRequest().getRealPath("/upload");
try {
File f = this.getFile();
if(this.getFileFileName().endsWith(".exe")){
message="对不起,你<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>的<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a>格式不允许!!!";
return ERROR;
}
FileInputStream inputStream = new FileInputStream(f);
FileOutputStream outputStream = new FileOutputStream(path + "/"+ this.getFileFileName());
byte[] buf = new byte[1024];
int length = 0;
while ((length = inputStream.read(buf)) != -1) {
outputStream.write(buf,length);
}
inputStream.close();
outputStream.flush();
} catch (Exception e) {
e.printStackTrace();
message = "对不起,<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a><a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>失败了!!!!";
}
return SUCCESS;
}
}
struts.xml
注意结合Action观察struts.xml中result的配置。
contentType参数是一定要有的,否则浏览器总是提示将返回的JSON结果另存为文件,不会交给ajaxfileupload处理。这是因为struts2 JSON Plugin默认的contentType为application/json,而ajaxfileupload则要求为text/html。
上传" onclick="return ajaxFileUpload();">