人工智能-项目实践-网站设计-文明校园宣传网站-毕业设计.zip

package com.qhw.service.impl; import com.qhw.dao.UserRepository; import com.qhw.pojo.User; import com.qhw.util.ThymeleafUtils; import com.qhw.dao.ContextRepository; import com.qhw.pojo.Context; import com.qhw.service.ContextService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.data.domain.Page; import org.springframework.data.domain.PageRequest; import org.springframework.data.domain.Pageable; import org.springframework.data.domain.Sort; import org.springframework.data.jpa.domain.Specification; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import org.thymeleaf.TemplateEngine; import javax.persistence.criteria.CriteriaBuilder; import javax.persistence.criteria.CriteriaQuery; import javax.persistence.criteria.Predicate; import javax.persistence.criteria.Root; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.UUID; /** * Created by asus on 2020/3/8 15:34 */ @Service public class ContextServiceImpl implements ContextService { @Value("${CONTEXT_OUT_DIR}") private String CONTEXT_OUT_DIR; @Autowired private ContextRepository contextRepository; @Autowired private UserRepository userRepository; @Override public List<Context> findAll() { return contextRepository.findAll(); } @Override public List<Context> findContextByModel(Integer modelId) { return contextRepository.findAllByModelId(modelId); } @Override public Page<Context> findAllByModelIdAndPage(Context context, Integer pageNum, Integer pageSize) { // Pageable pageable = new PageRequest(pageNum, pageSize, new Sort(Sort.Direction.ASC, "id")); String sortName = context.getViewCount() == null? "createTime" : "viewCount"; Pageable pageable = PageRequest.of(pageNum, pageSize, new Sort(Sort.Direction.DESC, sortName)); Specification<Context> spec = new Specification<Context>() { @Override public Predicate toPredicate(Root<Context> root, CriteriaQuery<?> criteriaQuery, CriteriaBuilder criteriaBuilder) { List<Predicate> list = new ArrayList<>(); if (context != null && context.getModelId() != null) { // 根据modelId条件查询 list.add(criteriaBuilder.equal(root.get("modelId").as(Integer.class), context.getModelId())); } if (context != null && context.getTitle() != null) { // 根据title模糊查询 list.add(criteriaBuilder.like(root.get("title").as(String.class), "%" + context.getTitle() + "%")); } return criteriaBuilder.and(list.toArray(new Predicate[list.size()])); } }; return contextRepository.findAll(spec, pageable); } @Override public Context getOne(Integer id) { return contextRepository.getOne(id); } @Override public void updateViewCount(Context context) { if (context.getId() == null) { throw new RuntimeException("获取当前文章的id失败"); } Context one = getOne(context.getId()); one.setViewCount(one.getViewCount() + 1); save(one); } @Override @Transactional(rollbackFor = Exception.class) public void createHtmlAndSave(Context context) throws IOException { TemplateEngine templateEngine = ThymeleafUtils.getTemplateEngine(); // 创建字符输出流并且自定义输出文件的位置和文件名 String newContentHtml = UUID.randomUUID().toString().replaceAll("-", "") + ".html"; // 获取文件存储的路径 String newHtmlPath = CONTEXT_OUT_DIR + context.getModelId() + "\\" + newContentHtml; // 判断文件是否存在 File file = new File(newHtmlPath); File parentFile = file.getParentFile(); if (!parentFile.exists()) { parentFile.mkdirs(); } file.createNewFile(); FileWriter fileWriter = new FileWriter(newHtmlPath); // 创建Context对象(存放Model) org.thymeleaf.context.Context thContext = new org.thymeleaf.context.Context(); Date currentTime = new Date(); SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd"); // 放入数据 thContext.setVariable("content", context.getContent()); thContext.setVariable("title", context.getTitle()); // 获取当前登录的用户名 thContext.setVariable("author", "齐宏武"); thContext.setVariable("createDate",formatter.format(currentTime)); // 创建静态文件，"text"是模板html名字 templateEngine.process("contextTem", thContext, fileWriter); // 释放文件流资源 fileWriter.close(); System.err.println("创建" + newHtmlPath + "成功"); context.setCreateTime(currentTime); context.setViewCount(0); // 如果创建静态页面成功 context.setContextPath(newHtmlPath); // 获取当前登录的用户id，并设置 *************************************** String username = SecurityContextHolder.getContext().getAuthentication().getName(); User userByUsername = userRepository.findUserByUsername(username); context.setUserId(userByUsername.getId()); contextRepository.save(context); } @Override @Transactional(rollbackFor = Exception.class) public void updateHtmlAndSave(Context context) { FileWriter fileWriter = null; Context repositoryOne = contextRepository.getOne(context.getId()); // 第一步，先删除原来的静态页面 try { String contextPath = repositoryOne.getContextPath(); File html = new File(contextPath); if (html.exists()) { html.delete(); // 如果静态页面存在，删除 System.err.println("删除" + contextPath + "成功"); } TemplateEngine templateEngine = ThymeleafUtils.getTemplateEngine(); // 创建字符输出流并且自定义输出文件的位置和文件名 String newContentHtml = UUID.randomUUID().toString().replaceAll("-", "") + ".html"; // 获取文件存储的路径 String newHtmlPath = CONTEXT_OUT_DIR + context.getModelId() + "\\" + newContentHtml; // 判断文件是否存在 File file = new File(newHtmlPath); File parentFile = file.getParentFile(); if (!parentFile.exists()) { parentFile.mkdirs(); } file.createNewFile(); fileWriter = new FileWriter(newHtmlPath); // 根据id查询要修改哪一个context repositoryOne.setUpdateTime(new Date()); // 设置修改时间 repositoryOne.setContextPath(newHtmlPath); repositoryOne.setContent(context.getContent()); repositoryOne.setFlag(context.getFlag()); repositoryOne.setModelId(context.getModelId()); repositoryOne.setRemark(context.getRemark()); repositoryOne.setTitle(context.getTitle()); // 获取当前登录用户的id ************************************** // repositoryOne.setUserId(2); // 创建Context对象(存放Model) org.thymeleaf.context.Context thContext = new org.thymeleaf.context.Context(); // 放入数据 thContext.setVariable("content", repositoryOne.getContent()); thContext.setVariable("title", repositoryOne.getTitle()); // 创建静态文件，"text"是�