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package com.chengxusheji.controller;

import java.beans.PropertyEditorSupport;

import java.io.File;

import java.io.IOException;

import java.io.PrintWriter;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.UUID;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.json.JSONException;

import org.json.JSONObject;

import org.springframework.beans.propertyeditors.CustomDateEditor;

import org.springframework.web.bind.WebDataBinder;

import org.springframework.web.bind.annotation.InitBinder;

import org.springframework.web.multipart.MultipartFile;

import org.springframework.web.multipart.MultipartHttpServletRequest;

import com.chengxusheji.utils.UserException;

public class BaseController {

@InitBinder

// 必须有一个参数WebDataBinder

public void initBinder(WebDataBinder binder) {

//System.out.println(binder.getFieldDefaultPrefix());

binder.registerCustomEditor(Date.class, new CustomDateEditor(

new SimpleDateFormat("yyyy-MM-dd"), false));

binder.registerCustomEditor(Integer.class, new PropertyEditorSupport() {

@Override

public String getAsText() {

return (getValue() == null) ? "" : getValue().toString();

}

@Override

public void setAsText(String text) {

Integer value = null;

if (null != text && !text.equals("")) {

try {

value = Integer.valueOf(text);

} catch(Exception ex) {

throw new UserException("数据格式输入不正确！");

}

}

setValue(value);

}

});

//binder.registerCustomEditor(Integer.class, null,new CustomNumberEditor(Integer.class, null, true));

binder.registerCustomEditor(Float.class, new PropertyEditorSupport() {

@Override

public String getAsText() {

return (getValue() == null)? "" : getValue().toString();

}

@Override

public void setAsText(String text) {

Float value = null;

if (null != text && !text.equals("")) {

try {

value = Float.valueOf(text);

} catch (Exception e) {

throw new UserException("数据格式输入不正确！");

}

}

setValue(value);

}

});

}

/**

* 处理图片文件上传，返回保存的文件名路径

* fileKeyName: 图片上传表单key

* @throws IOException

* @throws IllegalStateException

*/

public String handlePhotoUpload(HttpServletRequest request,String fileKeyName) throws IllegalStateException, IOException {

String fileName = "upload/NoImage.jpg";

MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;

/**构建图片保存的目录**/

String photoBookPathDir = "/upload";

/**得到图片保存目录的真实路径**/

String photoBookRealPathDir = request.getSession().getServletContext().getRealPath(photoBookPathDir);

/**根据真实路径创建目录**/

File photoBookSaveFile = new File(photoBookRealPathDir);

if(!photoBookSaveFile.exists())

photoBookSaveFile.mkdirs();

/**页面控件的文件流**/

MultipartFile multipartFile_photoBook = multipartRequest.getFile(fileKeyName);

if(!multipartFile_photoBook.isEmpty()) {

/**获取文件的后缀**/

String suffix = multipartFile_photoBook.getOriginalFilename().substring

(multipartFile_photoBook.getOriginalFilename().lastIndexOf("."));

String smallSuffix = suffix.toLowerCase();

if(!smallSuffix.equals(".jpg") && !smallSuffix.equals(".gif") && !smallSuffix.equals(".png") )

throw new UserException("图片格式不正确！");

/**使用UUID生成文件名称**/

String photoBookFileName = UUID.randomUUID().toString()+ suffix;//构建文件名称

//String logImageName = multipartFile.getOriginalFilename();

/**拼成完整的文件保存路径加文件**/

String photoBookFilePath = photoBookRealPathDir + File.separator + photoBookFileName;

File photoBookFile = new File(photoBookFilePath);

multipartFile_photoBook.transferTo(photoBookFile);

fileName = "upload/" + photoBookFileName;

}

return fileName;

}

/**

* 处理图片文件上传，返回保存的文件名路径

* fileKeyName: 图片上传表单key

* @throws IOException

* @throws IllegalStateException

*/

public String handleFileUpload(HttpServletRequest request,String fileKeyName) throws IllegalStateException, IOException {

String fileName = "";

MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;

/**构建图片保存的目录**/

String photoBookPathDir = "/upload";

/**得到图片保存目录的真实路径**/

String photoBookRealPathDir = request.getSession().getServletContext().getRealPath(photoBookPathDir);

/**根据真实路径创建目录**/

File photoBookSaveFile = new File(photoBookRealPathDir);

if(!photoBookSaveFile.exists())

photoBookSaveFile.mkdirs();

/**页面控件的文件流**/

MultipartFile multipartFile_photoBook = multipartRequest.getFile(fileKeyName);

if(!multipartFile_photoBook.isEmpty()) {

/**获取文件的后缀**/

String suffix = multipartFile_photoBook.getOriginalFilename().substring

(multipartFile_photoBook.getOriginalFilename().lastIndexOf("."));

/**使用UUID生成文件名称**/

String photoBookFileName = UUID.randomUUID().toString()+ suffix;//构建文件名称

//String logImageName = multipartFile.getOriginalFilename();

/**拼成完整的文件保存路径加文件**/

String photoBookFilePath = photoBookRealPathDir + File.separator + photoBookFileName;

File photoBookFile = new File(photoBookFilePath);

multipartFile_photoBook.transferTo(photoBookFile);

fileName = "upload/" + photoBookFileName;

}

return fileName;

}

/*向客户端输出操作成功或失败信息*/

public void writeJsonResponse(HttpServletResponse response,boolean success,String message)

throws IOException, JSONException {

response.setContentType("text/json;charset=UTF-8");

PrintWriter out = response.getWriter();

//将要被返回到客户端的对象

JSONObject json=new JSONObject();

json.accumulate("success", success);

json.accumulate("message", message);

out.println(json.toString());

out.flush();

out.close();

}

}