lineage/ruoyi-admin/src/main/java/com/ruoyi/web/controller/api/TbNewsController.java

package com.ruoyi.web.controller.api;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;

import java.util.Date;
import java.util.List;
import java.util.Arrays;

import com.ruoyi.app.domain.TbNews;
import com.ruoyi.app.service.ITbNewsService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import com.ruoyi.common.utils.StringUtils;
import lombok.RequiredArgsConstructor;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.ruoyi.common.annotation.Log;
import com.ruoyi.common.core.controller.BaseController;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.enums.BusinessType;
import com.ruoyi.common.utils.poi.ExcelUtil;
import com.ruoyi.common.core.page.TableDataInfo;

/**
 * 资讯
 *
 * @author lsw
 * @date 2020-10-12
 */
@RequiredArgsConstructor(onConstructor_ = @Autowired)
@RestController
@RequestMapping("/system/news")
public class TbNewsController extends BaseController {

    private final ITbNewsService iTbNewsService;

    /**
     * 查询资讯列表
     */
    @PreAuthorize("@ss.hasPermi('system:news:list')")
    @GetMapping("/list")
    public TableDataInfo list(TbNews tbNews) {
        startPage();
        LambdaQueryWrapper<TbNews> lqw = new LambdaQueryWrapper<TbNews>();
        if (StringUtils.isNotBlank(tbNews.getTitle())) {
            lqw.like(TbNews::getTitle, tbNews.getTitle());
        }
        if (tbNews.getState() != null) {
            lqw.eq(TbNews::getState, tbNews.getState());
        }
        List<TbNews> list = iTbNewsService.list(lqw);
        return getDataTable(list);
    }

    /**
     * 获取资讯详细信息
     */
    @PreAuthorize("@ss.hasPermi('system:news:query')")
    @GetMapping(value = "/{id}")
    public AjaxResult getInfo(@PathVariable("id") Long id) {
        return AjaxResult.success(iTbNewsService.getById(id));
    }

    /**
     * 外部获取资讯详细信息（用于app分享资讯）
     */
    @GetMapping(value = "/detail/{id}")
    public AjaxResult detail(@PathVariable("id") Long id) {
        TbNews news = iTbNewsService.getById(id);
        if (news != null && news.getState() == 0) {
            return AjaxResult.success(iTbNewsService.getById(id));
        } else {
            return AjaxResult.success();
        }
    }

    /**
     * 新增资讯
     */
    @PreAuthorize("@ss.hasPermi('system:news:add')")
    @Log(title = "资讯", businessType = BusinessType.INSERT)
    @PostMapping
    public AjaxResult add(@RequestBody TbNews tbNews) {
        tbNews.setCreateTime(new Date());
        tbNews.setDescs(StripHT(tbNews.getContents()));
        return toAjax(iTbNewsService.save(tbNews) ? 1 : 0);
    }

    /**
     * 修改资讯
     */
    @PreAuthorize("@ss.hasPermi('system:news:edit')")
    @Log(title = "资讯", businessType = BusinessType.UPDATE)
    @PutMapping
    public AjaxResult edit(@RequestBody TbNews tbNews) {
        tbNews.setDescs(StripHT(tbNews.getContents()));
        tbNews.setUpdateTime(new Date());
        return toAjax(iTbNewsService.updateById(tbNews) ? 1 : 0);
    }

    /**
     * 删除资讯
     */
    @PreAuthorize("@ss.hasPermi('system:news:remove')")
    @Log(title = "资讯", businessType = BusinessType.DELETE)
    @DeleteMapping("/{ids}")
    public AjaxResult remove(@PathVariable Long[] ids) {
        return toAjax(iTbNewsService.removeByIds(Arrays.asList(ids)) ? 1 : 0);
    }

    //从html中提取纯文本作为摘要
    private String StripHT(String strHtml) {
        String txtcontent = strHtml.replaceAll("</?[^>]+>", ""); //剔出<html>的标签
        txtcontent = txtcontent.replaceAll("<a>\\s*|\t|\r|\n</a>", "");//去除字符串中的空格,回车,换行符,制表符
        return txtcontent.substring(0, txtcontent.length() > 80 ? 80 : txtcontent.length());
    }
}