标签：contex 获取 pom utf8 junit 根据 coding psk 详细资料
<!--junit测试-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.20</version>
</dependency>
<!--c3p0 数据库连接池-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.5</version>
</dependency>
<!--servlet-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<!--jsp-->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<!--jstl-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.4</version>
</dependency>
<!--mybatis-spring整合-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.4</version>
</dependency>
<!--spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<!--spring-jdbc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
</dependency>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
pojo
@Data
@NoArgsConstructor
@AllArgsConstructor
public class Books {
private int bookID;
private String bookName;
private int bookCounts;
private String detail;
}
dao
<?xml version="1.0" encoding="GBK" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!--设置 日志-->
<settings>
<setting name="lohImpl" value="STDOUT_LOGGING"/>
</settings>
<!--别名-->
<typeAliases>
<package name="com.min.pojo"/>
</typeAliases>
<!--配置数据源，整合后交给spring-->
<mappers>
<mapper class="com.min.dao.BookMapper"/>
</mappers>
</configuration>
jdbc.driver=com.mysql.jdbc.Driver
#如果使用MySQL8.0+,需要增加一个时区配置； &serverTimezone=Asia/Shanghai
jdbc.url=jdbc://mysql://localhost:3306/ssmbuild?useSSL=false&useUnicode=true&characterEncode=utf8&serverTimezone=Asia/Shanghai
jdbc.username=root
jdbc.password=123456
public interface BookMapper {
//增加一本书
public int addBook(Books book);
//删除一本书
public int deleteBookById(@Param("bookId") int id);
//更新一本书
public int updateBook(Books book);
//查询一本书
public Books queryBookById(@Param("bookId") int id);
//查询所有的书
public List<Books> queryAllBooks();
}
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.min.dao.BookMapper">
<insert id="addBook" parameterType="Books">
insert into ssmbuild.books (bookName, bookCounts,detail)
values (#{bookName},#{bookCounts},#{detail})
</insert>
<delete id="deleteBookById" parameterType="_int">
delete from ssmbuild.books
where bookID = #{bookId}
</delete>
<update id="updateBook" parameterType="Books">
update ssmbuild.books
set bookName = #{bookName},
set bookCounts = #{bookCounts},
set detail = #{detail}
where bookID = #{bookId}
</update>
<select id="queryBookById" resultType="Books">
select * from ssmbuild.books
where bookID = #{bookId}
</select>
<select id="queryAllBooks" resultType="Books">
select * from ssmbuild.books
</select>
</mapper>
<?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">
<!--1、关联数据库配置文件-->
<context:property-placeholder location="classpath:db.properties"/>
<!--2、连接池
dbcp: 半自动化，不能自己连接
c3p0:自动化（自动化加载配置文件，并且自动设置到对象中）
druid : hikari:
-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}}"/>
<property name="jdbcUrl" value="${jdbc.url}}"/>
<property name="user" value="${jdbc.username}}"/>
<property name="password" value="${jdbc.password}"/>
<!--c3p0连接池私有属性-->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!--关闭连接后不自动commit-->
<property name="autoCommitOnClose" value="false"/>
<!--获取连接超时时间-->
<property name="checkoutTimeout" value="10000"/>
<!--当获取连接失败重试次数-->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!--3、sqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!--绑定mybatis配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--4、配置dao接口扫描包，动态实现Dao接口可以注入到容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入sqlSessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--要扫描的dao包-->
<property name="basePackage" value="com.min.dao"/>
</bean>
</beans>
mapper实现另外两种方式
public class BookMapperImpl extends SqlSessionDaoSupport implements BookMapper {
public int addBook(Books book) {
return getSqlSession().getMapper(BookMapperImpl.class).addBook(book);
}
}
spring-dao.xml中配置4 要做如下调整
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<!--只能使用构造器注入，源码分析没有set方法-->
<constructor-arg index="0" ref="sqlSessionFactory"/>
</bean>
<bean id="userMapper" class="com.min.mapper.UserMapperImpl">
<!--需要提供SqlSessionDaoSupport的父类需要的sqlSessionFactory对象-->
<property name="sqlSessionFactory" ref="sqlSessionFactory"/>
</bean>
public class BookMapperImpl implements BookMapper {
private SqlSessionTemplate sessionTemplate;
public void setSessionTemplate(SqlSessionTemplate sessionTemplate) {
this.sessionTemplate = sessionTemplate;
}
public int addBook(Books book) {
return sessionTemplate.getMapper(BookMapperImpl.class).addBook(book);
}
}
spring-dao.xml中配置4 要做如下调整
<bean id="sessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
<!--只能使用构造器注入，源码分析没有set方法-->
<constructor-arg index="0" ref="sqlSessionFactory"/>
</bean>
<bean id="userMapper" class="com.min.mapper.UserMapperImpl">
<property name="sqlSession" ref="sqlSession"/>
</bean>
service
@Service
public interface BookService {
//增加一本书
public int addBook(Books book);
//删除一本书
public int deleteBookById(@Param("bookId") int id);
//更新一本书
public int updateBook(Books book);
//查询一本书
public Books queryBookById(@Param("bookId") int id);
//查询所有的书
public List<Books> queryAllBooks();
}
public class BookServiceImpl implements BookService {
//service 调用 dao
private BookMapper bookMapper;
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
public int addBook(Books book) {
return bookMapper.addBook(book);
}
public int deleteBookById(int id) {
return bookMapper.deleteBookById(id);
}
public int updateBook(Books book) {
return bookMapper.updateBook(book);
}
public Books queryBookById(int id) {
return bookMapper.queryBookById(id);
}
public List<Books> queryAllBooks() {
return bookMapper.queryAllBooks();
}
}
<?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">
<!--1、扫描service下的包-->
<context:component-scan base-package="com.min.service"/>
<!--2、将我们所有的业务类，注入到Spring，可以通过配置或注解实现-->
<bean id="BookServiceImpl" class="com.min.service.BookServiceImpl">
<property name="bookMapper" ref="bookMapper"/>
</bean>
<!--3、声明式事务-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
<!--4、aop事务支持-->
<!--结合AOP实现事务的织入-->
<!--配置事务通知-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<!--给哪些方法配置事务-->
<!--配置事务的传播特性: new propagation-->
<tx:attributes>
<tx:method name="*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<!--配置事务切入-->
<aop:config>
<aop:pointcut id="txPointCut" expression="execution(* com.min.dao.*.*(..))"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
</aop:config>
</beans>
web
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>首页</title>
<style>
a{
text-decoration: none;
color: black;
font-size: 18px;
}
h3{
width: 180px;
height: 38px;
margin: 100px auto;
text-align: center;
line-height: 38px;
background-color: deepskyblue;
border-radius: 5px;
}
</style>
</head>
<body>
<h3>
<a href="${pageContext.request.contextPath}/book/allBooks">进入数据展示页面</a>
</h3>
</body>
</html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>addBook</title>
<%--BootStrap美化界面--%>
<link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix"><%--清除浮动--%>
<div class="col-md-12 column"><%--栅格 共12栏--%>
<h1>
<small>新增书籍</small>
</h1>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/addBook" method="post">
<div class="form-group">
<label >书籍名称:</label>
<input type="text" name="bookName" class="form-control" required>
</div>
<div class="form-group">
<label >书籍数量:</label>
<input type="text" name="bookCounts" class="form-control" required>
</div>
<div class="form-group">
<label >书籍描述:</label>
<input type="text" name="detail" class="form-control" required>
</div>
<div class="form-group">
<input type="submit" class="form-control" value="添加">
</div>
</form>
</div>
</body>
</html>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>allBooks.jsp</title>
<%--BootStrap美化界面--%>
<link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix"><%--清除浮动--%>
<div class="col-md-12 column"><%--栅格 共12栏--%>
<h1>
<small>数据列表------展示所有书籍</small>
</h1>
</div>
<div class="col-md-4 column">
<%--toAddBook--%>
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
</div>
<div class="col-md-8 column">
<%--查询书籍--%>
<form class="form-inline" action="${pageContext.request.contextPath}/book/queryByName" method="post" style="float: right">
<span style="color: red;font-weight: bold">${msg}</span>
<input type="text" name="bookName" class="form-control" placeholder="请输入要查询的书籍名称">
<input type="submit" value="查询" class="btn btn-primary">
</form>
</div>
</div>
<div class="row clearfix"><%--清除浮动--%>
<div class="col-md-12 column"><%--栅格 共12栏--%>
<table class="table table-hover table-striped"><%--table-hover隔行变色--%>
<thead>
<tr>
<th>书籍编号</th>
<th>书籍名称</th>
<th>书籍数量</th>
<th>书籍详情</th>
<th>操作</th>
</tr>
</thead>
<%--书籍从数据库中查询出来,从这个list中遍历出来:foreach--%>
<tbody>
<tr>
<c:forEach var="book" items="${list}">
<tr>
<td>${book.bookID}</td>
<td>${book.bookName}</td>
<td>${book.bookCounts}</td>
<td>${book.detail}</td>
<td>
<a href="${pageContext.request.contextPath}/book/toUpdateBook/${book.bookID}">修改</a>
| <a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">删除</a>
</td>
</tr>
</c:forEach>
</tr>
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>updateBook</title>
<%--BootStrap美化界面--%>
<link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix"><%--清除浮动--%>
<div class="col-md-12 column"><%--栅格 共12栏--%>
<h1>
<small>更新书籍</small>
</h1>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/updateBook" method="post">
<div class="form-group" hidden="hidden">
<label >书籍编号:</label>
<input type="text" name="bookID" class="form-control" value="${qBook.bookID}" />
</div>
<div class="form-group">
<label >书籍名称:</label>
<input type="text" name="bookName" class="form-control" value="${qBook.bookName}" required/>
</div>
<div class="form-group">
<label >书籍数量:</label>
<input type="text" name="bookCounts" class="form-control" value="${qBook.bookCounts}" required/>
</div>
<div class="form-group">
<label >书籍描述:</label>
<input type="text" name="detail" class="form-control" value="${qBook.detail}" required/>
</div>
<div class="form-group">
<input type="submit" class="form-control" value="更新">
</div>
</form>
</div>
</body>
</html>
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<!--1、DispatcherServlet-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--初始化web配置-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<!--启动级别-->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--2、乱码过滤-->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--3、Session超时-->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
controller
@Controller
@RequestMapping("/book")
public class BookController {
// controller 调用 Service
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
public void setBookService(BookService bookService) {
this.bookService = bookService;
}
//查询全部书籍，返回到书籍展示页面
@RequestMapping("/allBooks")
public String list(Model model){
List<Books> books = bookService.queryAllBooks();
model.addAttribute("list",books);
return "allBooks";
}
//去新增书籍
@RequestMapping("/toAddBook")
public String addBook(Model model){
return "addBook";
}
//新增书籍
@RequestMapping("/addBook")
public String addBook(Books books){
System.out.println("addBook => " + books);
bookService.addBook(books);
return "redirect:/book/allBooks"; // 重定向到@RequestMapping("/allBooks")请求
}
//去更新书籍
@RequestMapping("/toUpdateBook/{bookID}")
public String updateBook(@PathVariable int bookID, Model model){
Books books = bookService.queryBookById(bookID);
model.addAttribute("qBook", books);
return "updateBook";
}
//新增书籍
@RequestMapping("/updateBook")
public String updateBook(Books books){
System.out.println("updateBook => " + books);
bookService.updateBook(books);
return "redirect:/book/allBooks"; // 重定向到@RequestMapping("/allBooks")请求
}
//删除书籍
@RequestMapping("/deleteBook/{bookID}")
public String deleteBook(@PathVariable int bookID){
System.out.println("deleteID => " + bookID);
bookService.deleteBookById(bookID);
return "redirect:/book/allBooks";
}
//根据名称查询书籍
@RequestMapping("/queryByName")
public String queryBooksByName(String bookName, Model model){
System.out.println("bookName => " + bookName);
model.addAttribute("msg", "");
if(bookName == null || bookName.equals("")){
model.addAttribute("msg", "请输入要查询书籍名称");
List<Books> books = bookService.queryAllBooks();
model.addAttribute("list", books);
}else{
List<Books> books = bookService.queryBooksByName(bookName);
model.addAttribute("list", books);
}
return "allBooks";
}
}
<?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:mvc="http://www.springframework.org/schema/mvc"
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 http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">
<!--1、注解驱动-->
<mvc:annotation-driven/>
<!--2、静态资源过滤-->
<mvc:default-servlet-handler/>
<!--3、扫描包：controller-->
<context:component-scan base-package="com.min.controller"/>
<!--4、视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--前缀-->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!--后缀-->
<property name="suffix" value=".jsp"/>
</bean>
</beans>
<?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">
<import resource="classpath:spring-dao.xml"/>
<import resource="classpath:spring-service.xml"/>
<import resource="classpath:spring-mvc.xml"/>
</beans>
问题：service层bean不存在
步骤：
1、看这个bean注入是否成功
2、junit单元测试，看代码是否可以查询到结果
3、问题出在Spring
4、springMVC整合时没有调用到service的bean
1、applicationContext.xml 没有注入bean
2、web.xml中，我们也绑定过配置文件，发现配置的是mvc.xml
解决方式：web.xml中引用spring核心配置文件！
问题：更新操作提交更新的SQL，但是修改失败
1、初次考虑是事务问题，显式声明事务后依旧失败
2、查看sql语句打印结果，没有传送id
解决方式：前端隐藏域传递id
问题：29-May-2020 14:13:14.568 严重 [http-nio-8080-exec-4]
org.springframework.web.servlet.FrameworkServlet.
initServletBean Context initialization failed
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name ‘sqlSessionFactory‘
defined in class path resource [spring-dao.xml]:
Invocation of init method failed; nested exception
is org.springframework.core.NestedIOException:
Failed to parse config resource: class path resource
[mybatis-config.xml]; nested exception is
org.apache.ibatis.builder.BuilderException:
Error parsing SQL Mapper Configuration.
Cause: org.apache.ibatis.builder.BuilderException:
The setting lohImpl is not known.
Make sure you spelled it correctly (case sensitive).
1、检查spring-dao.xml的配置文件引用，没有问题
2、检查mybatis-config.xml配置，发现setting中新增日志书写问题
解决方式：<setting name="logImpl" value="STDOUT_LOGGING"/>书写错误处理
问题：模糊查询拼接问题
解决方式：1、在调用处手动的去添加“%”通配符
2、%#{bookName}%程序会报错，原因是：缺少单引号。
3、‘%#{bookName}%’程序依然会报错，原因是：如果加上单引号，那么就当成是一个字符串，而#{ }写在字符串中不能识别，要改写成${ }这种形式
4、借助mysql的函数concat(‘%‘,#{bookName},‘%‘)
问题：applicationContext配置包扫描
解决方式：<!--自动扫描指定的包，包中的所有注解交由Spring管理-->
<context:component-scan base-package="com.min.controller"/>
问题：com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException:
1 字节的 UTF-8 序列的字节 1 无效。
解决方式：<?xml version="1.0" encoding="GBK"?>修改配置文件字符集GBK
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标签：contex 获取 pom utf8 junit 根据 coding psk 详细资料
原文地址：https://www.cnblogs.com/bky-min/p/12995011.html
