标签：提交数据 gif package idle mat 参数 builder nan ==
1、springboot之jpa支持
2、Springboot+bootstrap界面版之增删改查及图片上传
导入pom依赖
1 <dependency> 2 <groupId>org.springframework.boot</groupId> 3 <artifactId>spring-boot-starter-data-jpa</artifactId> 4 </dependency>
配置application.yml信息
1 spring: 2 jpa: 3 hibernate: 4 ddl-auto: update 5 show-sql: true
自动建表代码
1 package com.yuan.springboot03.entity; 2 3 import lombok.Data; 4 5 import javax.persistence.*; 6 7 @Data 8 @Table(name = "t_springboot_book_yuan") 9 @Entity 10 public class Book { 11 @Id 12 @GeneratedValue 13 private Integer bid; 14 @Column(length = 100) 15 private String bname; 16 @Column 17 private Float price; 18 19 }
建表成功
jpa值增删改查
1 package com.yuan.springboot03.repository; 2 3 import com.yuan.springboot03.entity.Book; 4 import org.springframework.data.jpa.repository.JpaRepository; 5 import org.springframework.stereotype.Repository; 6 7 /* 8 * 只要继承JpaRepository，通常所用的增删查改方法都有 9 * 第一个参数：操作的实体类 10 * 第二个参数：实体类对应数据表的主键 11 */ 12 13 @Repository 14 public interface BookRepository extends JpaRepository<Book, Integer> { 15 }
controller层
1 package com.yuan.springboot03.controller; 2 3 import com.yuan.springboot03.entity.Book; 4 import org.springframework.beans.factory.annotation.Autowired; 5 import org.springframework.data.jpa.repository.JpaRepository; 6 import org.springframework.web.bind.annotation.RequestMapping; 7 import org.springframework.web.bind.annotation.RestController; 8 9 import java.util.List; 10 11 @RestController 12 @RequestMapping("/book") 13 public class BookController { 14 @Autowired 15 private JpaRepository jpaDao; 16 17 @RequestMapping("/add") 18 public String add(Book book){ 19 jpaDao.save(book); 20 return "success"; 21 } 22 23 @RequestMapping("/edit") 24 public String edit(Book book){ 25 jpaDao.save(book); 26 return "success"; 27 } 28 29 @RequestMapping("/del") 30 public String del(Book book){ 31 jpaDao.delete(book); 32 return "success"; 33 } 34 35 @RequestMapping("/getOne") 36 public Book getOne(Integer bid){ 37 // 会出现懒加载问题：org.hibernate.LazyInitializationException: could not initialize proxy - no Session 38 // return jpaDao.getOne(bid); 39 return (Book)jpaDao.findById(bid).get(); 40 } 41 42 @RequestMapping("/getAll") 43 public List<Book> getAll(){ 44 return jpaDao.findAll(); 45 } 46 }
查询效果
本次案例采取的是spring data jpa和bootstrap3来完成的，
并没有使用github提供的分页插件Pagehelper，pagehelper与SSM配合分页在前面博客已经有所讲解。
工程创建
导入相关pom依赖
1 <mysql.version>5.1.44</mysql.version> 2 <version>${mysql.version}</version> 3 4 5 <dependency> 6 <groupId>com.alibaba</groupId> 7 <artifactId>druid-spring-boot-starter</artifactId> 8 <version>1.1.10</version> 9 </dependency> 10 <dependency> 11 <groupId>commons-fileupload</groupId> 12 <artifactId>commons-fileupload</artifactId> 13 <version>1.3.1</version> 14 </dependency> 15 16 <dependency> 17 <groupId>org.springframework</groupId> 18 <artifactId>spring-aspects</artifactId> 19 </dependency>
配置application.yml
1 server: 2 servlet: 3 context-path: /springboot 4 spring: 5 jpa: 6 hibernate: 7 ddl-auto: update 8 show-sql: true 9 datasource: 10 type: com.alibaba.druid.pool.DruidDataSource 11 driver-class-name: com.mysql.jdbc.Driver 12 url: jdbc:mysql://localhost:3306/mybatis_ssm?useUnicode=true&characterEncoding=utf8 13 username: mybatis_ssm 14 password: xiaoli 15 druid: 16 initial-size: 5 17 min-idle: 5 18 max-active: 20 19 max-wait: 60000 20 time-between-eviction-runs-millis: 60000 21 min-evictable-idle-time-millis: 30000 22 validation-query: SELECT 1 FROM DUAL 23 test-while-idle: true 24 test-on-borrow: true 25 test-on-return: false 26 pool-prepared-statements: true 27 max-pool-prepared-statement-per-connection-size: 20 28 filter: 29 stat: 30 merge-sql: true 31 slow-sql-millis: 5000 32 web-stat-filter: 33 enabled: true 34 url-pattern: /* 35 exclusions: "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*" 36 session-stat-enable: true 37 session-stat-max-count: 100 38 stat-view-servlet: 39 enabled: true 40 url-pattern: /druid/* 41 reset-enable: true 42 login-username: admin 43 login-password: admin 44 allow: 127.0.0.1 45 thymeleaf: 46 cache: false 47 48 # 解决图片上传大小限制问题，也可采取配置类 49 servlet: 50 multipart: 51 max-file-size: 20MB 52 max-request-size: 60MB
Springboot03Application
1 package com.yuan.springboot03; 2 3 import org.springframework.boot.SpringApplication; 4 import org.springframework.boot.autoconfigure.SpringBootApplication; 5 import org.springframework.transaction.annotation.EnableTransactionManagement; 6 7 @EnableTransactionManagement 8 @SpringBootApplication 9 public class Springboot03Application { 10 11 public static void main(String[] args) { 12 SpringApplication.run(Springboot03Application.class, args); 13 } 14 15 }
上传文件映射配置类MyWebAppConfigurer.java
1 package com.yuan.springboot03.config; 2 3 import org.springframework.context.annotation.Configuration; 4 import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry; 5 import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport; 6 7 /** 8 * 资源映射路径 9 */ 10 @Configuration 11 public class MyWebAppConfigurer extends WebMvcConfigurationSupport { 12 @Override 13 protected void addResourceHandlers(ResourceHandlerRegistry registry) { 14 registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/"); 15 registry.addResourceHandler("/uploadImages/**").addResourceLocations("file:E:/temp/"); 16 super.addResourceHandlers(registry); 17 } 18 }
后台代码
StringUtils
1 package com.yuan.springboot03.utils; 2 3 import java.util.ArrayList; 4 import java.util.Arrays; 5 import java.util.List; 6 import java.util.Set; 7 8 public class StringUtils { 9 // 私有的构造方法，保护此类不能在外部实例化 10 private StringUtils() { 11 } 12 13 /** 14 * 如果字符串等于null或去空格后等于""，则返回true，否则返回false 15 * 16 * @param s 17 * @return 18 */ 19 public static boolean isBlank(String s) { 20 boolean b = false; 21 if (null == s || s.trim().equals("")) { 22 b = true; 23 } 24 return b; 25 } 26 27 /** 28 * 如果字符串不等于null或去空格后不等于""，则返回true，否则返回false 29 * 30 * @param s 31 * @return 32 */ 33 public static boolean isNotBlank(String s) { 34 return !isBlank(s); 35 } 36 37 /** 38 * set集合转string 39 * @param hasPerms 40 * @return 41 */ 42 public static String SetToString(Set hasPerms){ 43 return Arrays.toString(hasPerms.toArray()).replaceAll(" ", "").replace("[", "").replace("]", ""); 44 } 45 46 /** 47 * 转换成模糊查询所需参数 48 * @param before 49 * @return 50 */ 51 public static String toLikeStr(String before){ 52 return isBlank(before) ? null : "%"+before+"%"; 53 } 54 55 /** 56 * 将图片的服务器访问地址转换为真实存放地址 57 * @param imgpath 图片访问地址（http://localhost:8080/uploadImage/2019/01/26/20190126000000.jpg） 58 * @param serverDir uploadImage 59 * @param realDir E:/temp/ 60 * @return 61 */ 62 public static String serverPath2realPath(String imgpath, String serverDir, String realDir) { 63 imgpath = imgpath.substring(imgpath.indexOf(serverDir)); 64 return imgpath.replace(serverDir,realDir); 65 } 66 67 /** 68 * 过滤掉集合里的空格 69 * @param list 70 * @return 71 */ 72 public static List<String> filterWhite(List<String> list){ 73 List<String> resultList=new ArrayList<String>(); 74 for(String l:list){ 75 if(isNotBlank(l)){ 76 resultList.add(l); 77 } 78 } 79 return resultList; 80 } 81 82 /** 83 * 从html中提取纯文本 84 * @param strHtml 85 * @return 86 */ 87 public static String html2Text(String strHtml) { 88 String txtcontent = strHtml.replaceAll("</?[^>]+>", ""); //剔出<html>的标签 89 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 90 return txtcontent; 91 } 92 93 public static void main(String[] args) { 94 } 95 }
PageBean
1 package com.yuan.springboot03.utils; 2 3 import javax.servlet.http.HttpServletRequest; 4 import java.util.Map; 5 6 /** 7 * 分页工具类 8 */ 9 public class PageBean { 10 11 private int page = 1;// 页码 12 13 private int rows = 3;// 页大小 14 15 private int total = 0;// 总记录数 16 17 private boolean pagination = true;// 是否分页 18 19 // 保存上次查询的参数 20 private Map<String, String[]> paramMap; 21 // 保存上次查询的url 22 private String url; 23 24 public void setRequest(HttpServletRequest request) { 25 String page = request.getParameter("page"); 26 String rows = request.getParameter("offset"); 27 String pagination = request.getParameter("pagination"); 28 this.setPage(page); 29 this.setRows(rows); 30 this.setPagination(pagination); 31 this.setUrl(request.getRequestURL().toString()); 32 this.setParamMap(request.getParameterMap()); 33 } 34 35 public PageBean() { 36 super(); 37 } 38 39 public Map<String, String[]> getParamMap() { 40 return paramMap; 41 } 42 43 public void setParamMap(Map<String, String[]> paramMap) { 44 this.paramMap = paramMap; 45 } 46 47 public String getUrl() { 48 return url; 49 } 50 51 public void setUrl(String url) { 52 this.url = url; 53 } 54 55 public int getPage() { 56 return page; 57 } 58 59 public void setPage(int page) { 60 this.page = page; 61 } 62 63 public void setPage(String page) { 64 if(StringUtils.isNotBlank(page)) { 65 this.page = Integer.parseInt(page); 66 } 67 } 68 69 public int getRows() { 70 return rows; 71 } 72 73 public void setRows(String rows) { 74 if(StringUtils.isNotBlank(rows)) { 75 this.rows = Integer.parseInt(rows); 76 } 77 } 78 79 public int getTotal() { 80 return total; 81 } 82 83 public void setTotal(int total) { 84 this.total = total; 85 } 86 87 public void setTotal(String total) { 88 if(StringUtils.isNotBlank(total)) { 89 this.total = Integer.parseInt(total); 90 } 91 } 92 93 public boolean isPagination() { 94 return pagination; 95 } 96 97 public void setPagination(boolean pagination) { 98 this.pagination = pagination; 99 } 100 101 public void setPagination(String pagination) { 102 if(StringUtils.isNotBlank(pagination) && "false".equals(pagination)) { 103 this.pagination = Boolean.parseBoolean(pagination); 104 } 105 } 106 107 /** 108 * 最大页 109 * @return 110 */ 111 public int getMaxPage() { 112 int max = this.total/this.rows; 113 if(this.total % this.rows !=0) { 114 max ++ ; 115 } 116 return max; 117 } 118 119 /** 120 * 下一页 121 * @return 122 */ 123 public int getNextPage() { 124 int nextPage = this.page + 1; 125 if(nextPage > this.getMaxPage()) { 126 nextPage = this.getMaxPage(); 127 } 128 return nextPage; 129 } 130 131 /** 132 * 上一页 133 * @return 134 */ 135 public int getPreviousPage() { 136 int previousPage = this.page -1; 137 if(previousPage < 1) { 138 previousPage = 1; 139 } 140 return previousPage; 141 } 142 143 144 /** 145 * 获得起始记录的下标 146 * 147 * @return 148 */ 149 public int getStartIndex() { 150 return (this.page - 1) * this.rows; 151 } 152 153 @Override 154 public String toString() { 155 return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", pagination=" + pagination + "]"; 156 } 157 }
PageUtil
1 package com.yuan.springboot03.utils; 2 3 import java.util.Map; 4 import java.util.Set; 5 6 /** 7 * 基于bootstrap3生成分页代码 8 */ 9 public class PageUtil { 10 public static String createPageCode(PageBean pageBean) { 11 StringBuffer sb = new StringBuffer(); 12 /* 13 * 拼接向后台提交数据的form表单 14 * 注意：拼接的form表单中的page参数是变化的，所以不需要保留上一次请求的值 15 */ 16 sb.append("<form id=‘pageBeanForm‘ action=‘"+pageBean.getUrl()+"‘ method=‘post‘>"); 17 sb.append("<input type=‘hidden‘ name=‘page‘>"); 18 Map<String, String[]> parameterMap = pageBean.getParamMap(); 19 if(parameterMap != null && parameterMap.size() > 0) { 20 Set<Map.Entry<String, String[]>> entrySet = parameterMap.entrySet(); 21 for (Map.Entry<String, String[]> entry : entrySet) { 22 if(!"page".equals(entry.getKey())) { 23 String[] values = entry.getValue(); 24 for (String val : values) { 25 sb.append("<input type=‘hidden‘ name=‘"+entry.getKey()+"‘ value=‘"+val+"‘>"); 26 } 27 } 28 } 29 } 30 sb.append("</form>"); 31 32 if(pageBean.getTotal()==0){ 33 return "未查询到数据"; 34 }else{ 35 sb.append("<li><a href=‘javascript:gotoPage(1)‘>首页</a></li>"); 36 if(pageBean.getPage()>1){ 37 sb.append("<li><a href=‘javascript:gotoPage("+pageBean.getPreviousPage()+")‘>上一页</a></li>"); 38 }else{ 39 sb.append("<li class=‘disabled‘><a href=‘javascript:gotoPage(1)‘>上一页</a></li>"); 40 } 41 for(int i=pageBean.getPage()-1;i<=pageBean.getPage()+1;i++){ 42 if(i<1||i>pageBean.getMaxPage()){ 43 continue; 44 } 45 if(i==pageBean.getPage()){ 46 sb.append("<li class=‘active‘><a href=‘#‘>"+i+"</a></li>"); 47 }else{ 48 sb.append("<li><a href=‘javascript:gotoPage("+i+")‘>"+i+"</a></li>"); 49 } 50 } 51 if(pageBean.getPage()<pageBean.getMaxPage()){ 52 sb.append("<li><a href=‘javascript:gotoPage("+pageBean.getNextPage()+")‘>下一页</a></li>"); 53 }else{ 54 sb.append("<li class=‘disabled‘><a href=‘javascript:gotoPage("+pageBean.getMaxPage()+")‘>下一页</a></li>"); 55 } 56 sb.append("<li><a href=‘javascript:gotoPage("+pageBean.getMaxPage()+")‘>尾页</a></li>"); 57 } 58 59 /* 60 * 给分页条添加与后台交互的js代码 61 */ 62 sb.append("<script type=‘text/javascript‘>"); 63 sb.append(" function gotoPage(page) {"); 64 sb.append(" document.getElementById(‘pageBeanForm‘).page.value = page;"); 65 sb.append(" document.getElementById(‘pageBeanForm‘).submit();"); 66 sb.append(" }"); 67 sb.append(" function skipPage() {"); 68 sb.append(" var page = document.getElementById(‘skipPage‘).value;"); 69 sb.append(" if(!page || isNaN(page) || parseInt(page)<1 || parseInt(page)>"+pageBean.getMaxPage()+"){"); 70 sb.append(" alert(‘请输入1~N的数字‘);"); 71 sb.append(" return;"); 72 sb.append(" }"); 73 sb.append(" gotoPage(page);"); 74 sb.append(" }"); 75 sb.append("</script>"); 76 return sb.toString(); 77 } 78 }
实体类entity
1 package com.yuan.springboot03.entity; 2 3 import lombok.ToString; 4 5 import javax.persistence.*; 6 7 /** 8 */ 9 @Entity 10 @Table(name = "t_springboot_teacher") 11 @ToString 12 public class Teacher { 13 @Id 14 @GeneratedValue 15 private Integer tid; 16 @Column(length = 16) 17 private String tname; 18 @Column(length = 4) 19 private String sex; 20 @Column(length = 100) 21 private String description; 22 @Column(length = 200) 23 private String imagePath; 24 25 public Integer getTid() { 26 return tid; 27 } 28 29 public void setTid(Integer tid) { 30 this.tid = tid; 31 } 32 33 public String getTname() { 34 return tname; 35 } 36 37 public void setTname(String tname) { 38 this.tname = tname; 39 } 40 41 public String getSex() { 42 return sex; 43 } 44 45 public void setSex(String sex) { 46 this.sex = sex; 47 } 48 49 public String getDescription() { 50 return description; 51 } 52 53 public void setDescription(String description) { 54 this.description = description; 55 } 56 57 public String getImagePath() { 58 return imagePath; 59 } 60 61 public void setImagePath(String imagePath) { 62 this.imagePath = imagePath; 63 } 64 }
dao层
1 package com.yuan.springboot03.repository; 2 3 import com.yuan.springboot03.entity.Teacher; 4 import org.springframework.data.jpa.repository.JpaRepository; 5 import org.springframework.data.jpa.repository.JpaSpecificationExecutor; 6 7 /** 8 * 只要继承JpaRepository，通常所用的增删查改方法都有 9 * 第一个参数：操作的实体类 10 * 第二个参数：实体类对应数据表的主键 11 * 12 * 要使用高级查询必须继承 13 * org.springframework.data.jpa.repository.JpaSpecificationExecutor<T>接口 14 */ 15 public interface TeacherDao extends JpaRepository<Teacher, Integer>, JpaSpecificationExecutor<Teacher> { 16 }
service层及service实现类
1 package com.yuan.springboot03.service; 2 3 import com.yuan.springboot03.entity.Teacher; 4 import com.yuan.springboot03.utils.PageBean; 5 import org.springframework.data.domain.Page; 6 7 public interface TeacherService { 8 9 public Teacher save(Teacher teacher); 10 11 public void deleteById(Integer id); 12 13 public Teacher findById(Integer id); 14 15 public Page<Teacher> listPager(Teacher teacher, PageBean pageBean); 16 17 }
1 package com.yuan.springboot03.service.impl; 2 3 import com.yuan.springboot03.entity.Teacher; 4 import com.yuan.springboot03.repository.TeacherDao; 5 import com.yuan.springboot03.service.TeacherService; 6 import com.yuan.springboot03.utils.PageBean; 7 import com.yuan.springboot03.utils.StringUtils; 8 import org.springframework.beans.factory.annotation.Autowired; 9 import org.springframework.data.domain.Page; 10 import org.springframework.data.domain.PageRequest; 11 import org.springframework.data.domain.Pageable; 12 import org.springframework.data.jpa.domain.Specification; 13 import org.springframework.stereotype.Service; 14 15 import javax.persistence.criteria.CriteriaBuilder; 16 import javax.persistence.criteria.CriteriaQuery; 17 import javax.persistence.criteria.Predicate; 18 import javax.persistence.criteria.Root; 19 @Service 20 public class TeacherServiceImpl implements TeacherService { 21 @Autowired 22 private TeacherDao teacherDao; 23 @Override 24 public Teacher save(Teacher teacher) { 25 return teacherDao.save(teacher); 26 } 27 28 @Override 29 public void deleteById(Integer id) { 30 teacherDao.deleteById(id); 31 } 32 33 @Override 34 public Teacher findById(Integer id) { 35 return teacherDao.findById(id).get(); 36 } 37 38 @Override 39 public Page<Teacher> listPager(Teacher teacher, PageBean pageBean) { 40 // jpa的Pageable分页是从0页码开始 41 Pageable pageable = PageRequest.of(pageBean.getPage()-1, pageBean.getRows()); 42 return teacherDao.findAll(new Specification<Teacher>() { 43 @Override 44 public Predicate toPredicate(Root<Teacher> root, CriteriaQuery<?> criteriaQuery, CriteriaBuilder criteriaBuilder) { 45 Predicate predicate = criteriaBuilder.conjunction(); 46 if(teacher != null){ 47 if(StringUtils.isNotBlank(teacher.getTname())){ 48 predicate.getExpressions().add(criteriaBuilder.like(root.get("tname"),"%"+teacher.getTname()+"%")); 49 } 50 } 51 return predicate; 52 } 53 },pageable); 54 } 55 }
controller层
1 package com.yuan.springboot03.controller; 2 3 import com.yuan.springboot03.entity.Teacher; 4 import com.yuan.springboot03.service.TeacherService; 5 import com.yuan.springboot03.utils.PageBean; 6 import com.yuan.springboot03.utils.PageUtil; 7 import com.yuan.springboot03.utils.StringUtils; 8 import org.apache.commons.io.FileUtils; 9 import org.springframework.beans.factory.annotation.Autowired; 10 import org.springframework.data.domain.Page; 11 import org.springframework.stereotype.Controller; 12 import org.springframework.web.bind.annotation.PathVariable; 13 import org.springframework.web.bind.annotation.RequestMapping; 14 import org.springframework.web.multipart.MultipartFile; 15 import org.springframework.web.servlet.ModelAndView; 16 17 import javax.servlet.http.HttpServletRequest; 18 import java.io.File; 19 import java.io.IOException; 20 21 /** 22 */ 23 @Controller 24 @RequestMapping("/teacher") 25 public class TeacherController { 26 @Autowired 27 private TeacherService teacherService; 28 29 @RequestMapping("/listPager") 30 public ModelAndView list(Teacher teacher, HttpServletRequest request){ 31 PageBean pageBean = new PageBean(); 32 pageBean.setRequest(request); 33 ModelAndView modelAndView = new ModelAndView(); 34 Page<Teacher> teachers = teacherService.listPager(teacher, pageBean); 35 modelAndView.addObject("teachers",teachers.getContent()); 36 pageBean.setTotal(teachers.getTotalElements()+""); 37 modelAndView.addObject("pageCode", PageUtil.createPageCode(pageBean)/*.replaceAll("<","<").replaceAll(">:",">")*/); 38 modelAndView.setViewName("list"); 39 return modelAndView; 40 } 41 42 @RequestMapping("/toEdit") 43 public ModelAndView toEdit(Teacher teacher){ 44 ModelAndView modelAndView = new ModelAndView(); 45 modelAndView.setViewName("edit"); 46 modelAndView.addObject("sexArr",new String[]{"男","女"}); 47 if(!(teacher.getTid() == null || "".equals(teacher.getTid()))) { 48 Teacher t = teacherService.findById(teacher.getTid()); 49 modelAndView.addObject("teacher", t); 50 } 51 return modelAndView; 52 } 53 54 @RequestMapping("/add") 55 public String add(Teacher teacher, MultipartFile image){ 56 try { 57 String diskPath = "E://temp/"+image.getOriginalFilename(); 58 String serverPath = "/uploadImages/"+image.getOriginalFilename(); 59 if(StringUtils.isNotBlank(image.getOriginalFilename())){ 60 FileUtils.copyInputStreamToFile(image.getInputStream(),new File(diskPath)); 61 teacher.setImagePath(serverPath); 62 } 63 teacherService.save(teacher); 64 } catch (IOException e) { 65 e.printStackTrace(); 66 } 67 return "redirect:/teacher/listPager"; 68 } 69 70 71 @RequestMapping("/edit") 72 public String edit(Teacher teacher, MultipartFile image){ 73 String diskPath = "E://temp/"+image.getOriginalFilename(); 74 String serverPath = "/uploadImages/"+image.getOriginalFilename(); 75 if(StringUtils.isNotBlank(image.getOriginalFilename())){ 76 try { 77 FileUtils.copyInputStreamToFile(image.getInputStream(),new File(diskPath)); 78 teacher.setImagePath(serverPath); 79 } catch (IOException e) { 80 e.printStackTrace(); 81 } 82 } 83 teacherService.save(teacher); 84 return "redirect:/teacher/listPager"; 85 } 86 87 @RequestMapping("/del/{bid}") 88 public String del(@PathVariable(value = "bid") Integer bid){ 89 teacherService.deleteById(bid); 90 return "redirect:/teacher/listPager"; 91 } 92 }
页面代码
list.html
1 <!DOCTYPE html> 2 <html lang="en"> 3 <html xmlns:th="http://www.thymeleaf.org"> 4 <head> 5 <meta charset="UTF-8"> 6 <title>书籍列表</title> 7 <script type="text/javascript" th:src="@{/static/js/xxx.js}"></script> 8 <link rel="stylesheet" th:href="@{/static/js/bootstrap3/css/bootstrap.min.css}"> 9 <link rel="stylesheet" th:href="@{/static/js/bootstrap3/css/bootstrap-theme.min.css}"> 10 <script type="text/javascript" th:src="@{/static/js/bootstrap3/js/jquery-1.11.2.min.js}"></script> 11 <script type="text/javascript" th:src="@{/static/js/bootstrap3/js/bootstrap.min.js}"></script> 12 </head> 13 <body> 14 <form th:action="@{/teacher/listPager}" method="post"> 15 书籍名称： <input type="text" name="tname" /> 16 <input type="submit" value="提交"/> 17 </form> 18 <a th:href="@{/teacher/toEdit}">新增</a> 19 <table border="1px" width="600px"> 20 <thead> 21 <tr> 22 <td>ID</td> 23 <td>头像</td> 24 <td>姓名</td> 25 <td>性别</td> 26 <td>简介</td> 27 <td>操作</td> 28 </tr> 29 </thead> 30 <tbody> 31 <tr th:each="teacher : ${teachers}"> 32 <td th:text="${teacher.tid}"></td> 33 <td><img style="width: 60px;height: 60px;" id="imgshow" th:src="${teacher.imagePath}" th:alt="${teacher.tname}"/></td> 34 <!--<td th:text="${teacher.imagePath}"></td>--> 35 <td th:text="${teacher.tname}"></td> 36 <td th:text="${teacher.sex}"></td> 37 <td th:text="${teacher.description}"></td> 38 <td> 39 <a th:href="@{‘/teacher/del/‘+${teacher.tid}}">删除</a> 40 <a th:href="@{‘/teacher/toEdit?tid=‘+${teacher.tid}}">修改</a> 41 </td> 42 </tr> 43 </tbody> 44 </table> 45 46 47 <nav> 48 <ul class="pagination pagination-sm" th:utext="${pageCode}"> 49 </ul> 50 51 <!--<ul class="pagination pagination-sm">--> 52 <!--<form id=‘pageBeanForm‘ action=‘http://localhost:8080/springboot/teacher/listPager‘ method=‘post‘><input type=‘hidden‘ name=‘page‘></form>--> 53 <!--<li><a href=‘javascript:gotoPage(1)‘>首页</a></li>--> 54 <!--<li class=‘disabled‘><a href=‘javascript:gotoPage(1)‘>上一页</a></li>--> 55 <!--<li class=‘active‘><a href=‘#‘>1</a></li>--> 56 <!--<li><a href=‘javascript:gotoPage(2)‘>2</a></li>--> 57 <!--<li><a href=‘javascript:gotoPage(2)‘>下一页</a></li>--> 58 <!--<li><a href=‘javascript:gotoPage(4)‘>尾页</a></li>--> 59 <!--<script type=‘text/javascript‘> function gotoPage(page) { document.getElementById(‘pageBeanForm‘).page.value = page; document.getElementById(‘pageBeanForm‘).submit(); } function skipPage() { var page = document.getElementById(‘skipPage‘).value; if(!page || isNaN(page) || parseInt(page)<1 || parseInt(page)>4){ alert(‘请输入1~N的数字‘); return; } gotoPage(page); }</script>--> 60 <!--</ul>--> 61 </nav> 62 </body> 63 </html>
edit.html
1 <!DOCTYPE html> 2 <html lang="en"> 3 <html xmlns:th="http://www.thymeleaf.org"> 4 <head> 5 <meta charset="UTF-8"> 6 <title>用户编辑界面</title> 7 8 <script type="text/javascript"> 9 function preShow() { 10 11 } 12 </script> 13 </head> 14 <body> 15 16 <form th:action="@{${teacher.tid} ? ‘/teacher/edit‘ : ‘/teacher/add‘}" method="post" enctype="multipart/form-data"> 17 <input type="hidden" name="tid" th:value="${teacher.tid}" /> 18 <input type="hidden" name="imagePath" th:value="${teacher.imagePath}" /> 19 <img id="imgshow" src="" alt=""/> 20 <input type="file" name="image" onchange="preShow();"></br> 21 教员名称： <input type="text" name="tname" th:value="${teacher.tname}" /></br> 22 教员描述： <input type="text" name="description" th:value="${teacher.description}" /></br> 23 单选回显 24 <input type="radio" name="sex" 25 th:each ="s:${sexArr}" 26 th:value="${s}" 27 th:text ="${s}" 28 th:attr ="checked=${s == teacher.sex}"> 29 30 <input type="submit" value="提交"/> 31 </form> 32 33 </body> 34 </html>
项目结构
功能实现
分页功能
thymeleaf单选回显，多选回显，下拉选回显，默认选中第一个
1 //默认选中第一个 2 <input type ="radio" name="repaymentType" 3 th:each ="repaymentType,repaymentState:${repaymentTypeList}" 4 th:value="${repaymentType.dictName}" 5 th:text ="${repaymentType.dictName}" 6 th:attr ="checked=${repaymentState.index==0?true:false}"> 7 8 //单选回显 9 <input type="radio" name="repaymentType" 10 th:each ="repaymentType:${repaymentTypeList}" 11 th:value="${repaymentType.dictName}" 12 th:text ="${repaymentType.dictName}" 13 th:attr ="checked=${financeProductDO.repaymentType == repaymentType.dictName?true:false}"> 14 15 //多选回显 16 <input type ="checkbox" name="companyRole" 17 th:each ="role : ${companyRoleList}" 18 th:value="${role.dictName}" 19 th:text ="${role.dictName}" 20 th:attr ="checked=${companyInformation.companyRole.contains(role.dictName)?true:false}"> 21 22 //下拉选回显默认选中 前台接收到参数：user对象和businessList集合 23 <option th:selected="${user.businessId eq busi.businessId}" 24 th:each="busi:${businessList}" 25 th:value="${busi.businessId}" 26 th:text="${busi.businessName}" > 27 </option>
标签：提交数据 gif package idle mat 参数 builder nan ==
原文地址：https://www.cnblogs.com/ly-0919/p/11965528.html
