YangPuBaoMing/src/main/java/com/dsideal/FengHuang/Index/Controller/IndexController.java

package com.dsideal.FengHuang.Index.Controller;

import cn.hutool.core.io.FileUtil;
import com.jfinal.aop.Before;
import com.jfinal.core.Controller;
import com.jfinal.ext.interceptor.GET;
import com.jfinal.kit.HttpKit;
import com.jfinal.kit.Kv;
import com.jfinal.kit.PathKit;
import com.jfinal.kit.StrKit;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

@SuppressWarnings("unchecked")
public class IndexController extends Controller {
    private static final Logger log = LoggerFactory.getLogger(IndexController.class);

    @Before({GET.class})
    public void index() {
        redirect("/html/login.html");
    }


    /**
     * 功能：保存Echarts图片
     */
    public void saveEcharts() {
        Kv kv = Kv.create();
        // 获取图片信息.
        String picInfo = getPara("picInfo");
        if (StringUtils.isBlank(picInfo)) {
            kv.set("success", false);
            kv.set("message", "picInfo为空,未从前台获取到base64图片信息!");
            renderJson(kv);
            return;
        }
        //此处可以根据业务实际情况进行进一步的开发！
        String newPicInfo = picInfo.replaceAll(" ", "+");
        decodeBase64(newPicInfo, "D:/image1.png");

        kv.set("success", true);
        kv.set("message", "保存成功！");
        renderJson(kv);
    }

    /**
     * 解析Base64位信息并输出到某个目录下面.
     *
     * @param base64Info base64串
     * @param picPath    生成的文件路径
     * @return 文件地址
     */
    private void decodeBase64(String base64Info, String picPath) {
        if (StringUtils.isEmpty(base64Info)) return;
        String[] arr = base64Info.split("base64,");
        // 将图片输出到系统某目录.
        OutputStream out = null;
        try {
            byte[] buffer = Base64.decodeBase64(arr[1]);
            out = new FileOutputStream(picPath);
            out.write(buffer);
        } catch (IOException e) {
            log.error("解析Base64图片信息并保存到某目录下出错!", e);
        } finally {
            IOUtils.closeQuietly(out);
        }
    }

    /**
     * 功能：获取真实ip
     *
     * @return
     */
    public String getTrueIp() {
        String url = "https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/ip.txt";
        String ip = HttpKit.get(url);
        ip = ip.split("\\n")[0];
        return ip.trim();
    }

    /**
     * 功能：采用静态html跳转redirect
     *
     * @param url
     */
    public void SaveRedirectHtml(String url) {
        String path = PathKit.getWebRootPath() + "/html/redirect.html";
        String content = "<script>window.location.href='" + url + "';</script>";
        FileUtil.writeUtf8String(content, path);
    }


    /**
     * 功能：实现动态IP到静态接口的映射关系
     * 访问办法：https://www.ccsjy.cn/FengHuang/pub602app?port=80&url=FengHuang/html/pages/dataSystem/dataSystem.html
     * 访问办法：http://127.0.0.1:9000/FengHuang/pub602app?port=80&url=FengHuang/html/pages/dataSystem/dataSystem.html
     *
     * @throws IOException
     */
    public void pub602app(String port, String url) {
        if (StrKit.isBlank(port)) {
            Kv kv = Kv.by("success", false);
            kv.set("msg", "没有正确传入参数port!");
            renderJson(kv);
            return;
        }
        if (StrKit.isBlank(url)) {
            Kv kv = Kv.by("success", false);
            kv.set("msg", "没有正确传入参数url!");
            renderJson(kv);
            return;
        }
        String trueIp = getTrueIp();
        SaveRedirectHtml("http://" + trueIp + ":" + port + "/" + url);
        redirect("/html/redirect.html");
    }
}