package com.lf.server.service.show;
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import com.lf.server.entity.all.HttpStatus;
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import com.lf.server.entity.ctrl.MarkJsonEntity;
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import com.lf.server.entity.show.MarkEntity;
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import com.lf.server.entity.sys.UserEntity;
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import com.lf.server.helper.*;
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import com.lf.server.mapper.show.MarkMapper;
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import com.lf.server.service.data.UploaderService;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import org.springframework.web.bind.annotation.RequestBody;
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import javax.servlet.ServletOutputStream;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.File;
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import java.io.FileInputStream;
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import java.net.URLEncoder;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Random;
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/**
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* 标绘
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* @author WWW
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*/
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@Service
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public class MarkService implements MarkMapper {
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@Autowired
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MarkMapper markMapper;
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@Autowired
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PathHelper pathHelper;
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@Override
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public Integer selectCount(Integer uid) {
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return markMapper.selectCount(uid);
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}
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@Override
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public List<MarkEntity> selectByPage(Integer uid, Integer limit, Integer offset) {
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return markMapper.selectByPage(uid, limit, offset);
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}
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@Override
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public List<MarkEntity> selectAll() {
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return markMapper.selectAll();
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}
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@Override
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public MarkEntity selectById(int id) {
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return markMapper.selectById(id);
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}
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@Override
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public Integer insert(MarkEntity entity) {
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return markMapper.insert(entity);
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}
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@Override
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public Integer inserts(List<MarkEntity> list) {
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return markMapper.inserts(list);
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}
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@Override
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public Integer delete(int id) {
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return markMapper.delete(id);
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}
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@Override
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public Integer deletes(List<Integer> ids) {
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return markMapper.deletes(ids);
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}
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@Override
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public Integer update(MarkEntity entity) {
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return markMapper.update(entity);
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}
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@Override
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public Integer updates(List<MarkEntity> list) {
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return markMapper.updates(list);
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}
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public void downloadShp(UserEntity ue, List<MarkJsonEntity> list, HttpServletRequest req, HttpServletResponse res) throws Exception {
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String parent = pathHelper.getTempPath(ue.getId());
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String path = getShpDir(ue, parent);
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List<MarkJsonEntity> points = getMarkByType(list, "POINT");
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if (points.size() > 0) {
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String pointFile = GdalHelper.createShp(points, path, "POINT");
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}
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List<MarkJsonEntity> lines = getMarkByType(list, "LINESTRING");
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if (lines.size() > 0) {
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String lineFile = GdalHelper.createShp(lines, path, "LINESTRING");
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}
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List<MarkJsonEntity> polygons = getMarkByType(list, "POLYGON");
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if (polygons.size() > 0) {
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String polygonFile = GdalHelper.createShp(polygons, path, "POLYGON");
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}
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File[] files = new File(path).listFiles();
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if (files == null || files.length == 0) {
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WebHelper.write2Page(res, WebHelper.getErrJson(HttpStatus.BAD_REQUEST, "Shp文件生成失败"));
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return;
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}
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String zip = getZip(parent);
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ZipHelper.zip(zip, parent);
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download(res, zip);
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}
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private String getShpDir(UserEntity ue, String parent) {
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String path = parent + File.separator + WebHelper.getRandomInt(100000, 1000000);
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File file = new File(path);
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if (!file.exists() && !file.isDirectory()) {
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file.mkdirs();
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}
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return path;
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}
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private List<MarkJsonEntity> getMarkByType(List<MarkJsonEntity> list, String type) {
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List<MarkJsonEntity> rs = new ArrayList<MarkJsonEntity>();
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for (MarkJsonEntity mark : list) {
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if (StringHelper.isEmpty(mark.getWkt())) {
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continue;
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}
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if (mark.getWkt().indexOf(type) > -1) {
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rs.add(mark);
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}
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}
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return rs;
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}
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private String getZip(String parent) {
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String path = parent + File.separator + WebHelper.getRandomInt(100000, 1000000) + ".zip";
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File file = new File(path);
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if (file.exists() && !file.isDirectory()) {
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file.delete();
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}
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return path;
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}
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private void download(HttpServletResponse res, String file) throws Exception {
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String fileName = URLEncoder.encode(FileHelper.getFileName(file), "UTF-8");
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// 设置响应头中文件的下载方式为附件方式，以及设置文件名
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res.setHeader("Content-Disposition", "attachment; filename=" + fileName);
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// 设置响应头的编码格式为UTF-8
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res.setCharacterEncoding("UTF-8");
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// 通过response对象设置响应数据格式(如："text/plain; charset=utf-8")
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String ext = FileHelper.getExtension(file);
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String mime = FileHelper.getMime(ext);
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res.setContentType(mime);
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// 通过response对象，获取到输出流
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ServletOutputStream outputStream = res.getOutputStream();
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// 定义输入流，通过输入流读取文件内容
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FileInputStream fileInputStream = new FileInputStream(file);
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int len = 0;
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byte[] bytes = new byte[1024];
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while ((len = fileInputStream.read(bytes)) != -1) {
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// 通过输入流读取文件数据，然后通过上述的输出流写回浏览器
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outputStream.write(bytes, 0, len);
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outputStream.flush();
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}
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// 关闭资源
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outputStream.close();
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fileInputStream.close();
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}
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}
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