package com.moon.server.controller.data;
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import com.moon.server.annotation.SysLog;
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import com.moon.server.config.PropertiesConfig;
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import com.moon.server.helper.StringHelper;
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import com.moon.server.helper.WebHelper;
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import io.swagger.annotations.Api;
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import io.swagger.annotations.ApiImplicitParam;
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import io.swagger.annotations.ApiImplicitParams;
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import io.swagger.annotations.ApiOperation;
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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.core.io.ClassPathResource;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.server.ServerHttpRequest;
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import org.springframework.http.server.ServerHttpResponse;
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import org.springframework.http.server.ServletServerHttpRequest;
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import org.springframework.http.server.ServletServerHttpResponse;
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import org.springframework.web.bind.annotation.*;
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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.io.InputStream;
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import java.io.OutputStream;
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import java.nio.charset.StandardCharsets;
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import java.time.Duration;
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import java.util.Date;
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import java.util.List;
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/**
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* WMTS服务
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* @author WWW
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*/
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@Api(tags = "数据管理\\WMTS服务")
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@RestController
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@RequestMapping("/wmts")
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public class WmtsController {
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@Autowired
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PropertiesConfig config;
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private final static Log log = LogFactory.getLog(WmtsController.class);
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@SysLog()
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@ApiOperation(value = "获取WMTS元数据")
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@ApiImplicitParams({
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@ApiImplicitParam(name = "token", value = "令牌", required = true, dataType = "String", defaultValue = "token", paramType = "path")
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})
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@GetMapping("select/{token}/WMTSCapabilities.xml")
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public void selectWmtsCapabilities(@PathVariable(name = "token") String token, HttpServletRequest req, HttpServletResponse res) {
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try {
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ClassPathResource resource = new ClassPathResource("wmts/web.xml");
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if (!resource.exists()) {
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return;
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}
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InputStream stream = resource.getInputStream();
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byte[] data = new byte[stream.available()];
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stream.read(data);
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stream.close();
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String url = req.getRequestURL().toString().replace("WMTSCapabilities.xml", "tile?");
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String result = new String(data, StandardCharsets.UTF_8);
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result = result.replace("{url}", url);
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byte[] bytes = result.getBytes(StandardCharsets.UTF_8);
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res.setHeader("Content-Type", "application/xml;charset=UTF-8");
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ServletOutputStream os = res.getOutputStream();
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os.write(bytes);
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os.flush();
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} catch (Exception ex) {
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log.error(ex.getMessage(), ex);
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}
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}
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@ApiOperation(value = "获取WMTS瓦片")
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@ApiImplicitParams({
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@ApiImplicitParam(name = "token", value = "令牌", required = true, dataType = "String", defaultValue = "token", paramType = "path"),
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@ApiImplicitParam(name = "layer", value = "图层类型", required = true, dataType = "String", defaultValue = "img"),
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@ApiImplicitParam(name = "tilematrix", value = "层级", required = true, dataType = "Integer"),
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@ApiImplicitParam(name = "tilerow", value = "行号", required = true, dataType = "Integer"),
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@ApiImplicitParam(name = "tilecol", value = "列号", required = true, dataType = "Integer")
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})
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@GetMapping("select/{token}/tile")
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public void selectWmtsTile(@PathVariable(name = "token") String token, HttpServletRequest req, HttpServletResponse res) {
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try {
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String layer = WebHelper.getReqParamVal(req, "layer");
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String matrix = WebHelper.getReqParamVal(req, "tilematrix");
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String row = WebHelper.getReqParamVal(req, "tilerow");
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String col = WebHelper.getReqParamVal(req, "tilecol");
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if (StringHelper.isEmpty(layer) || StringHelper.isEmpty(matrix) || StringHelper.isEmpty(layer) || StringHelper.isEmpty(row) || StringHelper.isEmpty(col)) {
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return;
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}
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int z = Integer.parseInt(matrix);
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int x = Integer.parseInt(row);
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int y = Integer.parseInt(col);
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getWmtsTile(layer, z, x, y, req, res);
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} catch (Exception ex) {
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log.error(ex.getMessage(), ex);
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}
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}
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/**
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* 获取WMTS瓦片
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*/
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private void getWmtsTile(String layer, int z, int x, int y, HttpServletRequest req, HttpServletResponse res) throws Exception {
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ServletServerHttpRequest ssReq = new ServletServerHttpRequest(req);
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ServletServerHttpResponse ssRes = new ServletServerHttpResponse(res);
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// 检查缓存是否过期
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if (checkIfNotModify(ssReq, ssRes)) {
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// 设置缓存头
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setBrowerCache(ssRes);
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return;
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}
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// 设置缓存参数
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setBrowerCache(ssRes);
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//res.setContentType("image/png")
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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;
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// y = (int) Math.pow(2, z) - y - 1;
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String path = config.getTilePath() + File.separator + layer + File.separator + z + File.separator + y + File.separator + x + ".png";
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System.out.println(path);
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File file = new File(path);
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if (!file.exists() || file.isDirectory()) {
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ClassPathResource resource = new ClassPathResource("wmts/nofound.png");
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fileInputStream = new FileInputStream(resource.getFile());
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} else {
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System.out.println(path);
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fileInputStream = new FileInputStream(file);
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}
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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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outputStream.write(bytes, 0, len);
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outputStream.flush();
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}
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//outputStream.close()
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fileInputStream.close();
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// 设置返回图片类型
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ssRes.getHeaders().set("Content-Type", "image/png");
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OutputStream os = ssRes.getBody();
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os.write(bytes);
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os.flush();
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}
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/**
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* 设置浏览器缓存参数
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*/
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private void setBrowerCache(ServerHttpResponse res) {
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HttpHeaders headers = res.getHeaders();
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headers.setCacheControl("public, must-revalidate");
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headers.setExpires(System.currentTimeMillis() + 24 * 60 * 60 * 1000);
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headers.setAccessControlMaxAge(Duration.ofHours(24));
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headers.setETag("\"" + new Date().toString() + "\"");
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// must-revalidate
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// response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
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}
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/**
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* 验证缓存参数
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*/
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boolean checkIfNotModify(ServerHttpRequest req, ServerHttpResponse res) {
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List<String> etags = req.getHeaders().getIfNoneMatch();
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if (0 == etags.size() || StringHelper.isEmpty(etags.get(0))) {
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return false;
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}
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res.setStatusCode(HttpStatus.NOT_MODIFIED);
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return true;
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}
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}
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