标签：growth 引入 并且 work glob XML IV repos DDM
Spring的一个核心功能是IOC，就是将Bean初始化加载到容器中，Bean是如何加载到容器的，可以使用Spring注解方式或者Spring XML配置方式。
Spring注解方式减少了配置文件内容，更加便于管理，并且使用注解可以大大提高了开发效率！
下面讲解Spring中常用的一些注解。
@Component ：标准一个普通的spring Bean类。
@Repository：标注一个DAO组件类。
@Service：标注一个业务逻辑组件类。
@Controller：标注一个控制器组件类。
这些都是注解在平时的开发过程中出镜率极高，@Component、@Repository、@Service、@Controller实质上属于同一类注解，用法相同，功能相同，区别在于标识组件的类型。@Component可以代替@Repository、@Service、@Controller，因为这三个注解是被@Component标注的。如下代码
1 @Target({ElementType.TYPE}) 2 @Retention(RetentionPolicy.RUNTIME) 3 @Documented 4 @Component 5 public @interface Controller { 6 String value() default ""; 7 }
（1）当一个组件代表数据访问层（DAO）的时候，我们使用@Repository进行注解，如下
1 @Repository 2 public class HappyDaoImpl implements HappyDao{ 3 private final static Logger LOGGER = LoggerFactory.getLogger(HappyDaoImpl .class); 4 public void club(){ 5 //do something ,like drinking and singing 6 } 7 }
（2）当一个组件代表业务层时，我们使用@Service进行注解，如下
项目实际应用：
1 @Service 2 @Transactional(readOnly = true) 3 public class ChartChineseOceanService extends CrudService<ChartChineseOceanDao, ChartChineseOcean> { 4 5 public ChartChineseOcean get(String id) { 6 return super.get(id); 7 } 8 9 public List<ChartChineseOcean> findList(ChartChineseOcean chartChineseOcean) { 10 return super.findList(chartChineseOcean); 11 } 12 13 public Page<ChartChineseOcean> findPage(Page<ChartChineseOcean> page, ChartChineseOcean chartChineseOcean) { 14 return super.findPage(page, chartChineseOcean); 15 } 16 17 @Transactional(readOnly = false) 18 public void save(ChartChineseOcean chartChineseOcean) { 19 super.save(chartChineseOcean); 20 } 21 22 @Transactional(readOnly = false) 23 public void delete(ChartChineseOcean chartChineseOcean) { 24 super.delete(chartChineseOcean); 25 } 26 27 }
（3）当一个组件作为前端交互的控制层，使用@Controller进行注解，如下
1 @Controller 2 public class HappyController { 3 @Autowired //下面进行讲解 4 private ClubService clubService; 5 6 // Control the people entering the Club 7 // do something 8 } 9 /*Controller相关的注解下面进行详细讲解，这里简单引入@Controller*/
实际应用：
1 /** 2 * Copyright © 2012-2016 <a href="https://github.com/thinkgem/jeesite">JeeSite</a> All rights reserved. 3 */ 4 package com.thinkgem.jeesite.modules.tpydg.chart.web; 5 6 import javax.servlet.http.HttpServletRequest; 7 import javax.servlet.http.HttpServletResponse; 8 9 import org.apache.shiro.authz.annotation.RequiresPermissions; 10 import org.springframework.beans.factory.annotation.Autowired; 11 import org.springframework.stereotype.Controller; 12 import org.springframework.ui.Model; 13 import org.springframework.web.bind.annotation.ModelAttribute; 14 import org.springframework.web.bind.annotation.RequestMapping; 15 import org.springframework.web.bind.annotation.RequestParam; 16 import org.springframework.web.servlet.mvc.support.RedirectAttributes; 17 18 import com.thinkgem.jeesite.common.config.Global; 19 import com.thinkgem.jeesite.common.persistence.Page; 20 import com.thinkgem.jeesite.common.web.BaseController; 21 import com.thinkgem.jeesite.common.utils.StringUtils; 22 import com.thinkgem.jeesite.modules.tpydg.chart.entity.ChartSchoolEnrolment; 23 import com.thinkgem.jeesite.modules.tpydg.chart.service.ChartSchoolEnrolmentService; 24 25 import java.util.List; 26 27 /** 28 * 岛国入学率Controller 29 * @author zkx 30 * @version 2018-05-15 31 */ 32 @Controller 33 @RequestMapping(value = "${adminPath}/chart/chartSchoolEnrolment") 34 public class ChartSchoolEnrolmentController extends BaseController { 35 36 @Autowired 37 private ChartSchoolEnrolmentService chartSchoolEnrolmentService; 38 39 @ModelAttribute 40 public ChartSchoolEnrolment get(@RequestParam(required=false) String id) { 41 ChartSchoolEnrolment entity = null; 42 if (StringUtils.isNotBlank(id)){ 43 entity = chartSchoolEnrolmentService.get(id); 44 } 45 if (entity == null){ 46 entity = new ChartSchoolEnrolment(); 47 } 48 return entity; 49 } 50 51 @RequiresPermissions("chart:chartSchoolEnrolment:view") 52 @RequestMapping(value = {"list", ""}) 53 public String list(ChartSchoolEnrolment chartSchoolEnrolment, HttpServletRequest request, HttpServletResponse response, Model model) { 54 Page<ChartSchoolEnrolment> enrolmentPage = new Page<ChartSchoolEnrolment>(request, response); 55 enrolmentPage.setOrderBy("year DESC"); 56 Page<ChartSchoolEnrolment> page = chartSchoolEnrolmentService.findPage(enrolmentPage, chartSchoolEnrolment); 57 model.addAttribute("page", page); 58 return "tpydg/chart/chartSchoolEnrolmentList"; 59 } 60 61 @RequiresPermissions("chart:chartSchoolEnrolment:view") 62 @RequestMapping(value = "form") 63 public String form(ChartSchoolEnrolment chartSchoolEnrolment, Model model) { 64 model.addAttribute("chartSchoolEnrolment", chartSchoolEnrolment); 65 return "tpydg/chart/chartSchoolEnrolmentForm"; 66 } 67 68 @RequiresPermissions("chart:chartSchoolEnrolment:edit") 69 @RequestMapping(value = "save") 70 public String save(ChartSchoolEnrolment chartSchoolEnrolment, Model model, RedirectAttributes redirectAttributes) { 71 if (!beanValidator(model, chartSchoolEnrolment)){ 72 return form(chartSchoolEnrolment, model); 73 } 74 ChartSchoolEnrolment schoolEnrolment = new ChartSchoolEnrolment(); 75 schoolEnrolment.setYear(chartSchoolEnrolment.getYear()); 76 List<ChartSchoolEnrolment> list = chartSchoolEnrolmentService.findList(schoolEnrolment); 77 if(StringUtils.isBlank(chartSchoolEnrolment.getId())&&! list.isEmpty()){ 78 addMessage(redirectAttributes, "添加失败，"+chartSchoolEnrolment.getYear()+"年数据已经存在！"); 79 } else{ 80 chartSchoolEnrolmentService.save(chartSchoolEnrolment); 81 addMessage(redirectAttributes, "添加成功"); 82 } 83 return "redirect:"+Global.getAdminPath()+"/chart/chartSchoolEnrolment/?repage"; 84 } 85 86 @RequiresPermissions("chart:chartSchoolEnrolment:edit") 87 @RequestMapping(value = "delete") 88 public String delete(ChartSchoolEnrolment chartSchoolEnrolment, RedirectAttributes redirectAttributes) { 89 chartSchoolEnrolmentService.delete(chartSchoolEnrolment); 90 addMessage(redirectAttributes, "删除岛国入学率成功"); 91 return "redirect:"+Global.getAdminPath()+"/chart/chartSchoolEnrolment/?repage"; 92 } 93 94 }
4.@Autowired @Autowired：属于Spring 的org.springframework.beans.factory.annotation包下,可用于为类的属性、构造器、方法进行注值
实际应用：
1 @Autowired 2 private ChartPopulationGrowthService chartPopulationGrowthService; 3 @Autowired 4 private ChartSchoolEnrolmentService chartSchoolEnrolmentService; 5 @Autowired 6 private ChartExportRateService chartExportRateService; 7 @Autowired 8 private ChartForeignInvestmentService chartForeignInvestmentService; 9 @Autowired 10 private ChartGdpCompositionService chartGdpCompositionService; 11 @Autowired 12 private ChartGdpGrowthRateService chartGdpGrowthRateService; 13 @Autowired 14 private ChartGdpPurchaseDiscountService chartGdpPurchaseDiscountService;
5.@RequestMapping ： 这个注解用于将url映射到整个处理类或者特定的处理请求的方法。可以只用通配符！
@RequestMapping 既可以作用在类级别，也可以作用在方法级别。当它定义在类级别时，标明该控制器处理所有的请求都被映射到 /favsoft 路径下。@RequestMapping中可以使用 method 属性标记其所接受的方法类型，如果不指定方法类型的话，可以使用 HTTP GET/POST 方法请求数据，但是一旦指定方法类型，就只能使用该类型获取数据。
实际应用：
1 @RequestMapping(value = {"list", ""}) 2 public String list(ChartPopulationGrowth chartPopulationGrowth, HttpServletRequest request, HttpServletResponse response, Model model) { 3 Page<ChartPopulationGrowth> growthPage = new Page<ChartPopulationGrowth>(request, response); 4 growthPage.setOrderBy("year DESC"); 5 Page<ChartPopulationGrowth> page = chartPopulationGrowthService.findPage(growthPage, chartPopulationGrowth); 6 model.addAttribute("page", page); 7 return "tpydg/chart/chartPopulationGrowthList"; 8 } 9 10 @RequiresPermissions("chart:chartPopulationGrowth:view") 11 @RequestMapping(value = "form") 12 public String form(ChartPopulationGrowth chartPopulationGrowth, Model model) { 13 model.addAttribute("chartPopulationGrowth", chartPopulationGrowth); 14 return "tpydg/chart/chartPopulationGrowthForm"; 15 } 16 17 @RequiresPermissions("chart:chartPopulationGrowth:edit") 18 @RequestMapping(value = "save") 19 public String save(ChartPopulationGrowth chartPopulationGrowth, Model model, RedirectAttributes redirectAttributes) { 20 if (!beanValidator(model, chartPopulationGrowth)){ 21 return form(chartPopulationGrowth, model); 22 } 23 24 ChartPopulationGrowth search = new ChartPopulationGrowth(); 25 search.setYear(chartPopulationGrowth.getYear()); 26 List<ChartPopulationGrowth> list = chartPopulationGrowthService.findList(search); 27 if(StringUtils.isBlank(chartPopulationGrowth.getId())&&!list.isEmpty()){ 28 addMessage(redirectAttributes,"添加失败，"+chartPopulationGrowth.getYear()+"年数据已经存在！"); 29 }else{ 30 chartPopulationGrowthService.save(chartPopulationGrowth); 31 addMessage(redirectAttributes, "添加成功"); 32 } 33 return "redirect:"+Global.getAdminPath()+"/chart/chartPopulationGrowth/?repage"; 34 } 35 36 @RequiresPermissions("chart:chartPopulationGrowth:edit") 37 @RequestMapping(value = "delete") 38 public String delete(ChartPopulationGrowth chartPopulationGrowth, RedirectAttributes redirectAttributes) { 39 chartPopulationGrowthService.delete(chartPopulationGrowth); 40 addMessage(redirectAttributes, "删除岛国 人口增长成功"); 41 return "redirect:"+Global.getAdminPath()+"/chart/chartPopulationGrowth/?repage"; 42 } 43 44 @RequiresPermissions("chart:chartPopulationGrowth:edit") 45 @RequestMapping(value = "import")
6.@RequestParam ：将请求的参数绑定到方法中的参数上，有required参数，默认情况下，required=true，也就是改参数必须要传。如果改参数可以传可不传，可以配置required=false。
1 @RequestMapping("/happy") 2 public String sayHappy( 3 @RequestParam(value = "name", required = false) String name, 4 @RequestParam(value = "age", required = true) String age) { 5 //age参数必须传 ，name可传可不传 6 ... 7 }
以上就是开发中用的最多的注解啦
参照博客：
https://blog.csdn.net/u010648555/article/details/76299467
标签：growth 引入 并且 work glob XML IV repos DDM
原文地址：https://www.cnblogs.com/zhukaixin/p/9172996.html
