Springboot整合FreeMarker的实现示例

 tk.mybatismapper-spring-boot-starter2.0.2 javax.persistencepersistence-api1.0compile

package com.lv.code.pojo; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import lombok.experimental.Accessors; /** * 学生表	student * @author hgh * @date 2022-01-21T13:35:43.912 */ @Data @NoArgsConstructor @AllArgsConstructor @Accessors(chain = true) public class Student { /** * 学生编号 主键 自增 */ private Long stuId; /** * 学生名字 */ private String stuName; /** * 学生电话 */ private String stuPhone; /** * 学生班级 */ private Long stuClass; /** * 学生地址 */ private String stuAddress; }

package com.lv.code.mapper; import com.lv.code.pojo.Student; import org.springframework.stereotype.Repository; import tk.mybatis.mapper.common.Mapper; @Repository public interface StudentMapper extends Mapper { }

package com.lv.code; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import tk.mybatis.spring.annotation.MapperScan; @SpringBootApplication @MapperScan("com.lv.code.mapper") public class Springboot04Application { public static void main(String[] args) { SpringApplication.run(Springboot04Application.class, args); } }

server: port: 8080 #  配置数据源 spring: datasource: username: root password: 123456 driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/aaa?userSSL=false&serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&allowPublicKeyRetrieval=true #  日志打印 logging: level: com.lv.code.mapper: debug

package com.lv.code; import com.lv.code.mapper.StudentMapper; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; @SpringBootTest class Springboot04ApplicationTests { @Autowired StudentMapper mapper; @Test void contextLoads() { System.out.println(mapper.selectAll()); } }

 org.springframework.bootspring-boot-starter-aop com.github.pagehelperpagehelper-spring-boot-starter1.2.10

package com.lv.code.aspect; import com.github.pagehelper.Page; import com.github.pagehelper.PageHelper; import com.github.pagehelper.PageInfo; import com.lv.code.util.PageBean; import lombok.extern.slf4j.Slf4j; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.springframework.stereotype.Component; /** * @author yk */ @Component @Aspect @Slf4j public class PageAspect { @Around(value = "execution(* *..*Service.*Pager(..))") public Object invoke(ProceedingJoinPoint point) throws Throwable { PageBean pageBean = null; for (Object e : point.getArgs()) { if (e instanceof PageBean) { pageBean = (PageBean) e; break; } } if (pageBean != null && pageBean.isPagination()) { PageHelper.startPage(pageBean.getPage(), pageBean.getRows()); } Object obj = point.proceed(point.getArgs()); if (obj != null) { if (obj instanceof Page) { Page page = (Page) obj; PageInfo pageInfo = new PageInfo(page); pageBean.setTotal(new Long(pageInfo.getTotal()).intValue()); return pageInfo.getList(); } } return obj; } }

package com.lv.code.util; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import javax.servlet.http.HttpServletRequest; import java.util.Map; /** * @author 银喾 */ @Data @NoArgsConstructor @AllArgsConstructor public class PageBean { private int total; private int page = 1; private int rows = 5; private boolean pagination = true; private String url; private Map ms; public void setMs(Map ms) { this.ms = ms; } public int calcStartIndex() { return (page - 1) * rows; } public int calcMaxPage() { return total % rows == 0 ? total / rows : total / rows + 1; } public int nextPage() { return Math.min(page + 1, calcMaxPage()); } public int prevPage() { return Math.max(page - 1, 1); } public void setRequest(HttpServletRequest req) { setUrl(req.getRequestURL().toString()); setMs(req.getParameterMap()); String page = req.getParameter("page"); if (page == null) { setPage(1); } else { setPage(Integer.parseInt(page)); } String rows = req.getParameter("rows"); if (rows == null) { setRows(5); } else { setRows(Integer.parseInt(rows)); } String pagination = req.getParameter("pagination"); if ("false".equals(pagination)) { setPagination(false); } } }

package com.lv.code.service; import com.lv.code.pojo.Student; import com.lv.code.util.PageBean; import java.util.List; public interface StudentService { List findPager(PageBean pageBean); }

package com.lv.code.service; import com.lv.code.mapper.StudentMapper; import com.lv.code.pojo.Student; import com.lv.code.util.PageBean; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class StudentServiceImpl implements StudentService { @Autowired private StudentMapper mapper; @Override public List findPager(PageBean pageBean) { return mapper.selectAll(); } }

package com.lv.code.controller; import com.github.pagehelper.PageRowBounds; import com.lv.code.service.StudentService; import com.lv.code.util.PageBean; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; import javax.servlet.http.HttpServletRequest; @RestController public class StudentController { @Autowired private StudentService service; @GetMapping public Object find(HttpServletRequest request){ PageBean pageBean=new PageBean(); pageBean.setRequest(request); return service.findPager(pageBean); } }

server: port: 8080 #  配置数据源 spring: datasource: username: root password: 123456 driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/aaa?userSSL=false&serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&allowPublicKeyRetrieval=true freemarker: #指定HttpServletRequest的属性是否可以覆盖controller的model的同名项 allow-request-override: false #req访问request request-context-attribute: req #后缀名freemarker默认后缀为.ftl，当然你也可以改成自己习惯的.html suffix: .ftl #设置响应的内容类型 content-type: text/html;charset=utf-8 #是否允许mvc使用freemarker enabled: true #是否开启template caching cache: false #设定模板的加载路径，多个以逗号分隔，默认: [ “classpath:/templates/” ] template-loader-path: classpath:/templates/ #设定Template的编码 charset: UTF-8 #  日志打印 logging: level: com.lv.code.mapper: debug