SSM整合之XML方式,与配置事务,拦截器,异常处理,PageHelper分页插件整合
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SSM整合之XML方式,与配置事务,拦截器,异常处理,PageHelper分页插件整合
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SSM整合之XML方式
將主流的三大框架整合一起使用
spring:將需要的bean交給IOC管理
SpringMVC:解決表現(xiàn)層
MyBatis:解決持久層
創(chuàng)建maven項(xiàng)目(配置文件與代碼中注釋有詳細(xì)解釋)
項(xiàng)目目錄結(jié)構(gòu)
數(shù)據(jù)庫(kù)數(shù)據(jù)準(zhǔn)備
CREATE TABLE `account` (`id` int(11) NOT NULL AUTO_INCREMENT,`name` varchar(20) DEFAULT NULL,`money` double DEFAULT NULL,PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8;/*Data for the table `account` */insert into `account`(`id`,`name`,`money`) values (1,'小付',1000),(2,'小花',1000);pom.xml
<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.fs</groupId><artifactId>day03_SSM_XML</artifactId><version>1.0-SNAPSHOT</version><packaging>war</packaging><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target></properties><dependencies><!--spring環(huán)境--><!--spring環(huán)境--><!--spring環(huán)境--><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>5.1.9.RELEASE</version></dependency><!--mybatis環(huán)境--><!--mybatis環(huán)境--><!--mybatis環(huán)境--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.3</version></dependency><!--mysql環(huán)境--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.47</version></dependency><!--spring整合jdbc--><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>5.1.9.RELEASE</version></dependency><!--spring整合mybatis--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>2.0.1</version></dependency><!--druid連接池--><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.1.20</version></dependency><!--分頁(yè)插件坐標(biāo)--><dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper</artifactId><version>5.1.2</version></dependency><!--springmvc環(huán)境--><!--springmvc環(huán)境--><!--springmvc環(huán)境--><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>5.1.9.RELEASE</version></dependency><!--jackson相關(guān)坐標(biāo)3個(gè) jackson-databind這一個(gè)會(huì)包含3個(gè)相關(guān)坐標(biāo)--><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.9.0</version></dependency> <!-- <dependency>--> <!-- <groupId>com.fasterxml.jackson.core</groupId>--> <!-- <artifactId>jackson-core</artifactId>--> <!-- <version>2.9.0</version>--> <!-- </dependency>--> <!-- <dependency>--> <!-- <groupId>com.fasterxml.jackson.core</groupId>--> <!-- <artifactId>jackson-annotations</artifactId>--> <!-- <version>2.9.0</version>--> <!-- </dependency>--><!--servlet環(huán)境--><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>3.1.0</version><scope>provided</scope></dependency><!--其他組件--><!--其他組件--><!--其他組件--><!--junit單元測(cè)試--><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version></dependency><!--spring整合junit--><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>5.1.9.RELEASE</version></dependency><!-- lombok--><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.12</version></dependency></dependencies><build><!--設(shè)置插件--><plugins><!--具體的插件配置--><plugin><groupId>org.apache.tomcat.maven</groupId><artifactId>tomcat7-maven-plugin</artifactId><version>2.2</version><configuration><port>80</port><path>/</path> <!-- 設(shè)置字符集編碼--><uriEncoding>UTF-8</uriEncoding></configuration></plugin></plugins></build> </project>配置文件
使用xml的方式要配置一下文件
web.xml:tomcat啟動(dòng)初始化
applicationContext.xml:spring的主配置文件
spring-mvc.xml:SpringMVC的配置文件
springMybatis.xml:MyBatis的配置文件
我dao使用的注解方式:若要使用MyBatis映射配置文件,就在resources中創(chuàng)建于dao一樣的包下創(chuàng)建dao.xml映射配置文件,然后寫(xiě)SQL語(yǔ)句
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"version="3.0"><!--springMVC程序啟動(dòng)流程1.tomcat啟動(dòng)首先加載web.xml2.保證DispatcherServlet能夠正常加載配置文件3.spring配置文件必須掃描有spring注解的的包--> <!-- 首先加載applicationContext.xml核心配置文件--><context-param><param-name>contextConfigLocation</param-name><param-value>classpath*:applicationContext.xml</param-value></context-param><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 配置調(diào)度服務(wù)器(前端控制器),配置后就能夠去調(diào)度controller中的路徑--><servlet><servlet-name>dispatcherServlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><!-- 初始化DispatcherServlet,初始化springIOC容器,讀取類(lèi)路徑下的spring-mvc.xml配置文件(target/classes/就會(huì)有這個(gè)配置文件),掃描controller注解下的RequestMapping的路徑--><param-name>contextConfigLocation</param-name> <!-- 在web.xml中加載springmvc.xml文件--><param-value>classpath:spring-mvc.xml</param-value></init-param><!-- 配置load-on-startup元素表示這個(gè)servlet應(yīng)該是在啟動(dòng)時(shí)加載(實(shí)例化并調(diào)用其init())的web應(yīng)用程序。--><load-on-startup>1</load-on-startup></servlet><!--配置請(qǐng)求調(diào)度服務(wù)--><servlet-mapping><!-- 配置調(diào)度服務(wù)--><servlet-name>dispatcherServlet</servlet-name><!--在spring中, / /*/ : 匹配所有的請(qǐng)求/* :匹配所有的請(qǐng)求,查詢結(jié)果頁(yè)面,都是以文本顯示,不會(huì)做任何的渲染頁(yè)面,包括jsp頁(yè)面--><url-pattern>/</url-pattern></servlet-mapping><!-- 配置過(guò)濾器,來(lái)解決post請(qǐng)求亂碼問(wèn)題--><filter><filter-name>characterEncodingFilter</filter-name><!-- 加載spring提供的過(guò)濾器--><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><!-- 設(shè)置過(guò)濾器中的屬性值--><init-param><param-name>encoding</param-name><param-value>UTF-8</param-value></init-param><!-- 啟動(dòng)過(guò)濾器--><init-param><param-name>forceEncoding</param-name><param-value>true</param-value></init-param></filter><!-- 過(guò)濾所有請(qǐng)求--><filter-mapping><filter-name>characterEncodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping> </web-app>jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://192.168.93.132:3306/test jdbc.username=root jdbc.password=rootspring-mvc.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> <!-- 掃描web相關(guān)的bean.SpringMVC會(huì)對(duì)這些bean進(jìn)行特殊處理--><context:component-scan base-package="com.fs.springssm.controller"/><!-- 靜態(tài)資源加載,核心控制器攔截的是所有請(qǐng)求,需要對(duì)靜態(tài)資源請(qǐng)求進(jìn)行放行,通過(guò)配置放行資源實(shí)現(xiàn)下面這個(gè)配置是可以放行所有的普通資源調(diào)用讓springMVC不處理靜態(tài)資源,如 .css .js .html .MP3 等--><mvc:default-servlet-handler/> <!-- 配置mvc注解驅(qū)動(dòng)--><mvc:annotation-driven/><!-- 配置視圖解析器,方便訪問(wèn)jsp頁(yè)面,并交給spring管理--><bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"><!-- 視圖解析前綴(訪問(wèn)前綴)--><property name="prefix" value="/WEB-INF/pages/"/><!-- 視圖解析后綴(訪問(wèn)后綴)--><property name="suffix" value=".jsp"/></bean><!-- 配置攔截器--><mvc:interceptors><mvc:interceptor> <!-- 攔截controller的所有請(qǐng)求--><mvc:mapping path="/**"/> <!-- 登錄頁(yè)面不攔截--><mvc:exclude-mapping path="/login"/> <!-- 配置自定義的攔截器--><bean class="com.fs.springssm.interceptor.MyInterceptor"/></mvc:interceptor></mvc:interceptors></beans>springMybatis.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttps://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"><!-- 引入properties--><context:property-placeholder location="classpath:jdbc.properties"/><!-- 配置德魯伊連接池--><bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"><property name="driverClassName" value="${jdbc.driver}"/><property name="url" value="${jdbc.url}"/><property name="username" value="${jdbc.username}"/><property name="password" value="${jdbc.password}"/></bean><!-- 配置SqlSessionFactoryBean--><bean class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource"/> <!-- 給實(shí)體類(lèi)起別名,方便MyBatis映射 --><property name="typeAliasesPackage" value="com.fs.springssm.pojo"/><!--配置分頁(yè)插件pagehelper,若要使用分頁(yè)就配置,不用就不用配置這個(gè)--><property name="plugins"><array><bean class="com.github.pagehelper.PageInterceptor"><property name="properties"><props><prop key="helperDialect">mysql</prop><prop key="reasonable">true</prop></props></property></bean></array></property></bean><!-- 配置映射掃描dao接口的包,由MyBatis動(dòng)態(tài)代理生成實(shí)現(xiàn)類(lèi)交給spring管理--><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="com.fs.springssm.dao"/></bean><!-- 配置聲明式事務(wù)--><tx:annotation-driven transaction-manager="transactionManager"/> <!-- 注意: 開(kāi)啟事務(wù)驅(qū)動(dòng)注解的支持,配合@Transactional使用--><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 注入連接池--><property name="dataSource" ref="dataSource"/></bean></beans>applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"><!-- 配置掃描包路徑下的spring的Bean相關(guān)的注解交給springIOC容器中--><context:component-scan base-package="com.fs.springssm"/> <!-- 引入其余的配置文件--><import resource="classpath:spring-mvc.xml"/><import resource="classpath:springMybatis.xml"/> </beans>實(shí)體類(lèi)POJO
對(duì)應(yīng)數(shù)據(jù)庫(kù)中表的字段信息
Account
package com.fs.springssm.pojo;import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import lombok.ToString;@Data @AllArgsConstructor @NoArgsConstructor @ToString public class Account {private Integer id;private String name;private Double money; }dao
AccountDao
package com.fs.springssm.dao;import com.fs.springssm.pojo.Account; import org.apache.ibatis.annotations.Delete; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.Select; import org.apache.ibatis.annotations.Update; import org.springframework.transaction.annotation.Transactional;import java.util.List;public interface AccountDao {//增@Insert("INSERT INTO account(NAME,money) VALUE(#{name},#{money})")int addAccount(Account account);//刪@Delete("DELETE FROM account WHERE id = #{id}")int delAccountById(Integer id);//改@Update("UPDATE account SET money = #{money} WHERE id = #{id}")int updateAccount(Account account);//查詢所有@Select("select * from account")List<Account> findAccountAll();//根據(jù)id查詢@Select("select * from account where id = #{id}")Account findAccountById(Integer id);//根據(jù)名字查詢@Select("select * from account where name = #{name}")Account findAccountByName(String name); }service
AccountService
規(guī)范接口
package com.fs.springssm.service;import com.fs.springssm.pojo.Account; import com.github.pagehelper.PageInfo; import org.springframework.transaction.annotation.Transactional;import java.util.List;public interface AccountService {//增int addAccount(Account account);//刪int delAccountById(Integer id);//改int updateAccount(Account account);//查詢所有List<Account> findAccountAll();//根據(jù)id查詢Account findAccountById(Integer id);//使用分頁(yè)插件分頁(yè)查詢PageInfo findPage(int pageNum,int pageSize);//對(duì)轉(zhuǎn)賬業(yè)務(wù)進(jìn)行事務(wù)管理//轉(zhuǎn)賬業(yè)務(wù)@TransactionalBoolean transferMoney(String nameA,String nameB,double money); }}AccountServiceImpl
package com.fs.springssm.service.impl;import com.fs.springssm.dao.AccountDao; import com.fs.springssm.pojo.Account; import com.fs.springssm.service.AccountService; import com.github.pagehelper.Page; import com.github.pagehelper.PageHelper; import com.github.pagehelper.PageInfo; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;import java.util.List;@Service public class AccountServiceImpl implements AccountService {//依耐dao層@Autowiredprivate AccountDao accountDao;@Overridepublic int addAccount(Account account) {return accountDao.addAccount(account);}@Overridepublic int delAccountById(Integer id) {return accountDao.delAccountById(id);}@Overridepublic int updateAccount(Account account) {return accountDao.updateAccount(account);}@Overridepublic List<Account> findAccountAll() {return accountDao.findAccountAll();}@Overridepublic Account findAccountById(Integer id) {return accountDao.findAccountById(id);}//分頁(yè)查詢@Overridepublic PageInfo findPage(int pageNum, int pageSize) {//分頁(yè)數(shù)據(jù)設(shè)置PageHelper.startPage(pageNum,pageSize);//調(diào)用查詢?nèi)糠椒?/span>List<Account> accountAll = accountDao.findAccountAll();//獲取分頁(yè)數(shù)據(jù)PageInfo<Account> accountPageInfo = new PageInfo<>(accountAll);return accountPageInfo;}//轉(zhuǎn)賬業(yè)務(wù)@Overridepublic Boolean transferMoney(String nameA, String nameB, double money) {//先把兩個(gè)用戶信息查出來(lái)Account name1 = accountDao.findAccountByName(nameA);Account name2 = accountDao.findAccountByName(nameB);//將1-money 2+moneyname1.setMoney(name1.getMoney() - money);name2.setMoney(name2.getMoney() + money);//然后更新兩個(gè)用戶int a = accountDao.updateAccount(name1);//制作異常 // int i = 1 / 0;int b = accountDao.updateAccount(name2);//沒(méi)有異常就返回truereturn a == b && b > 0;} }將返回的結(jié)果集封裝成一個(gè)對(duì)象,然后將這個(gè)對(duì)象轉(zhuǎn)成json返回到前端
ResultMapper
package com.fs.springssm.result;import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor;@Data @AllArgsConstructor @NoArgsConstructor public class ResultMapper<T> {//響應(yīng)回前端狀態(tài)碼private Integer code;//是否成功private Boolean flag;//數(shù)據(jù)(可以將查詢出的數(shù)據(jù)封裝到這里,任何數(shù)據(jù)都可以,因?yàn)槭欠盒?private T data;//消息private String message;public ResultMapper(Boolean flag, String message) {this.flag = flag;this.message = message;this.code = Code.DELETE_OK;this.data = null;} }Code 自定義狀態(tài)碼
package com.fs.springssm.result;public class Code { // 操作結(jié)果編碼public static final Integer SAVE_OK = 20011;public static final Integer UPDATE_OK = 20021;public static final Integer DELETE_OK = 20031;public static final Integer GET_OK = 20041;public static final Integer SAVE_ERROR = 20010;public static final Integer UPDATE_ERROR = 20020;public static final Integer DELETE_ERROR = 20030;public static final Integer GET_ERROR = 20040;// 系統(tǒng)錯(cuò)誤編碼// 操作權(quán)限編碼// 校驗(yàn)結(jié)果編碼}自定義攔截器(需要在spring-mvc.xml配置才會(huì)生效)
MyInterceptor
package com.fs.springssm.interceptor; /* 攔截器與過(guò)濾器有什么不同Interceptor攔截器是SpringMVC的技術(shù),攔截控制的controller,攔截springIOC中的controllerfilter過(guò)濾器是tomcat中所有的接收到的請(qǐng)求都可以被攔截,包括spring中的controller//三個(gè)方法的運(yùn)行順序?yàn)? preHandle -> controller中被攔截的方法執(zhí)行 ->postHandle -> afterCompletion//如果preHandle返回值為false，三個(gè)方法僅運(yùn)行preHandle由HandlerInterceptor接口源碼得知,方法被default修飾了(java8新特性)被默認(rèn)實(shí)現(xiàn)了方法的,所以我們自定義攔截器沒(méi)有強(qiáng)制我們重寫(xiě)接口中的方法所以我們需要自己重寫(xiě)接口中的方法實(shí)現(xiàn)自定義攔截器的具體功能HandlerInterceptor接口源碼public interface HandlerInterceptor {default boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {return true;}default void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable ModelAndView modelAndView) throws Exception {}default void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable Exception ex) throws Exception {} }*/ import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;//自定義攔截器需要實(shí)現(xiàn)HandleInterceptor接口,實(shí)現(xiàn)這個(gè)接口沒(méi)有被強(qiáng)制現(xiàn)實(shí)所有方法 //是因?yàn)镠andlerInterceptor接口中的方法有默認(rèn)的default實(shí)現(xiàn)方法,所以我們需要自己重寫(xiě)接口中的方法 public class MyInterceptor implements HandlerInterceptor {//處理器運(yùn)行之前執(zhí)行@Overridepublic boolean preHandle(HttpServletRequest request,//請(qǐng)求攜帶的requestHttpServletResponse response,//響應(yīng)攜帶的Response//handler就是我們執(zhí)行的controller方法路徑Object handler) throws Exception {//下面打印的就是我們自己寫(xiě)的controller的方法,使用反射技術(shù)//public java.lang.String com.fs.springmvc.controller.InterceptorController.handleRun()///System.out.println(handler.toString());System.out.println("前置運(yùn)行----a1");//返回值為false將攔截原始處理器的運(yùn)行,訪問(wèn)的controller中的方法不會(huì)被執(zhí)行,//而且后面的postHandle,afterCompletion也不會(huì)執(zhí)行//如果配置多攔截器，返回值為false將終止當(dāng)前攔截器后面配置的攔截器的運(yùn)行return true;}//處理器運(yùn)行之后執(zhí)行@Overridepublic void postHandle(HttpServletRequest request,HttpServletResponse response,Object handler,//controller執(zhí)行方法后要返回的視圖ModelAndViewModelAndView modelAndView) throws Exception {System.out.println("后置運(yùn)行----b1");}//所有攔截器的后置執(zhí)行全部結(jié)束后，執(zhí)行該操作@Overridepublic void afterCompletion(HttpServletRequest request,HttpServletResponse response,Object handler,//Exception ex) throws Exception {System.out.println("完成運(yùn)行----c1");}//三個(gè)方法的運(yùn)行順序?yàn)? preHandle -> postHandle -> afterCompletion//如果preHandle返回值為false，三個(gè)方法僅運(yùn)行preHandle }自定義異常通知,對(duì)ioc容器中bean的異常進(jìn)行管理
ExceptionAdvice
package com.fs.springssm.exception;import com.fs.springssm.result.Code; import com.fs.springssm.result.ResultMapper; import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.ResponseBody;@ControllerAdvice//表示為異常通知類(lèi),會(huì)對(duì)ioc中的所以類(lèi)的異常進(jìn)行統(tǒng)一管理 public class ExceptionAdvice {//異常處理方法,處理個(gè)大的,也可以細(xì)分@ExceptionHandler(Exception.class)@ResponseBody//將自定義的結(jié)果映射類(lèi)返回給前端public ResultMapper exceptionHandle(Exception ex){//創(chuàng)建自定義的結(jié)果集,封裝成json返回給前端ResultMapper<String> exceptionResultMapper = new ResultMapper<>();exceptionResultMapper.setCode(Code.DELETE_ERROR);exceptionResultMapper.setData("服務(wù)器發(fā)生異常啦");exceptionResultMapper.setMessage("服務(wù)器繁忙,請(qǐng)稍候再試~~~");//exceptionResultMapper.setMessage(ex.getMessage());exceptionResultMapper.setFlag(false);return exceptionResultMapper;} }controller
AccountController
package com.fs.springssm.controller;import com.fs.springssm.pojo.Account; import com.fs.springssm.result.Code; import com.fs.springssm.result.ResultMapper; import com.fs.springssm.service.AccountService; import com.github.pagehelper.PageInfo; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RestController;import java.util.List;@RequestMapping("/account") @RestController//@Controller@ResponseBody相當(dāng)于這兩個(gè)注解 public class AccountController {@Autowiredprivate AccountService accountService;//添加@RequestMapping("/add")@ResponseBody//將返回的對(duì)象通過(guò)jackson轉(zhuǎn)換成json傳遞到前端public ResultMapper<String> addAccount(@RequestBody Account account){//@RequestBody從請(qǐng)求體中獲取json對(duì)象int i = accountService.addAccount(account);if (i>0) {return new ResultMapper<>(Code.DELETE_OK,true,"添加成功","成功");}else {return new ResultMapper<>(Code.GET_ERROR,false,"添加失敗","失敗");}}//查詢所有@RequestMapping("/all")@ResponseBodypublic ResultMapper<List<Account>> findAll(){List<Account> accountAll = accountService.findAccountAll();if (accountAll.size()!=0) {return new ResultMapper<>(Code.DELETE_OK,true,accountAll,"查詢成功");}else {return new ResultMapper<>(Code.GET_ERROR,false,null,"查詢結(jié)果為空");}}//分頁(yè)查詢@RequestMapping("/findPage")@ResponseBodypublic ResultMapper<PageInfo> findPage(int pageNum,int pageSize){//調(diào)用分頁(yè)業(yè)務(wù)方法PageInfo page = accountService.findPage(pageNum, pageSize);if (page!=null) {return new ResultMapper<>(Code.DELETE_OK,true,page,"查詢成功");}else {return new ResultMapper<>(Code.GET_ERROR,false,null,"查詢結(jié)果為空");}}//轉(zhuǎn)賬@RequestMapping("/transfer")@ResponseBodypublic ResultMapper transferMoney(String nameA,String nameB,Double money){//調(diào)用轉(zhuǎn)賬方法Boolean aBoolean = accountService.transferMoney(nameA, nameB, money);//將結(jié)果封裝到結(jié)果對(duì)象中ResultMapper resultMapper = new ResultMapper<>(aBoolean,"轉(zhuǎn)賬結(jié)果");return resultMapper;}}啟動(dòng)Tomcat測(cè)試ssm整合(使用Postman工具)
測(cè)試查詢所有方法
http://localhost/account/all
測(cè)試添加方法
http://localhost/account/add
測(cè)試轉(zhuǎn)賬方法
http://localhost/account/transfer?nameA=小付&nameB=小花&money=100
正常轉(zhuǎn)賬成功
在業(yè)務(wù)層制造異常模擬轉(zhuǎn)賬失敗
在業(yè)務(wù)層轉(zhuǎn)賬方法制作一個(gè)異常來(lái)測(cè)試聲明式事務(wù)與自定義異常是否會(huì)執(zhí)行
//制作異常int i = 1 / 0;然后重啟tomcat
執(zhí)行結(jié)果
總結(jié)
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