标签:nsa 连接池 没有 定义 自定义 函数 ping prepare prope
页面引入BootStrap和JQuery
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css"
integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
SSM配置文件:pom.xml
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!-- 数据库连接池:c3p0 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- Servlet Jsp Jstl-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.6</version>
</dependency>
<!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
<!-- Spring操作数据库,需要spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
<!-- AspectJ Weaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.6</version>
</dependency>
<!--lombok -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
<scope>provided</scope>
</dependency>
</dependencies>
<!--在build中配置resources,防止资源导出失败的问题-->
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
SSM的配置文件:
web.xml:注册DispatcherServlet
<?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. 注册DispatcherServlet-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--关联一个springmvc的配置文件:【servlet-name】-servlet.xml -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc-servlet.xml</param-value>
</init-param>
<!--启动级别-1-->
<load-on-startup>1</load-on-startup>
</servlet>
<!-- / 和/* 的区别-->
<!-- / 匹配所有的请求:(不包括.jsp)-->
<!-- /* 匹配所有的请求:(包括.jsp)-->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--SpringMVC提供的乱码过滤器-->
<filter>
<filter-name>encoding</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>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
SpringMVC的配置文件springmvc-serlvet.xml:配置视图解析器。如果用注解开发,要配置自动扫描包。
<?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/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--自动扫描包,让指定包下的注解生效,由IOC容器统一管理-->
<context:component-scan base-package="com.musecho.controller"/>
<!--视图解析器ViewResolver:解析DispatcherServlet传递来的ModelAndView-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="InternalResourceViewResolver">
<!--前缀-->
<property name="prefix" value="/WEB-INF/jsp/" />
<!--后缀-->
<property name="suffix" value=".jsp" />
</bean>
<!--JSON乱码问题配置-->
<mvc:annotation-driven>
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8"/>
</bean>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="objectMapper">
<bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
<property name="failOnEmptyBeans" value="false"/>
</bean>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!--Handler-->
<!-- <bean id="/hello" class="com.musecho.controller.HelloController" /> -->
</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:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
https://www.springframework.org/schema/aop/spring-aop.xsd">
<import resource="spring-dao.xml" />
<!--注册bean-->
<bean id="userMapper" class="mapper.UserMapperImpl">
<property name="sqlSession" ref="sqlSession" />
</bean>
</beans>
spring-dao.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:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
https://www.springframework.org/schema/aop/spring-aop.xsd">
<!--DataSource:使用Spring的数据源替换Mybatis的配置 c3p0 dbcp druid
这里使用Spring提供的JDBC: org.springframework.jdbc.datasource -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/mybatiss?useSSL=true&useUnicode=true&characterEncoding=UTF-8" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean>
<!--SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!--绑定Mybatis核心配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<property name="mapperLocations" value="classpath:mapper/*.xml" />
</bean>
<!--SqlSessionTemplate:相当于我们之前使用的sqlSession-->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<!--只能使用构造器注入sqlSessionFactory,因为没有set方法-->
<constructor-arg index="0" ref="sqlSessionFactory" />
</bean>
<!--配置声明式事务-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<constructor-arg ref="dataSource" />
</bean>
<!--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="add*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED"/>
<tx:method name="select*" read-only="true" />
<!-- <tx:method name="*" propagation="REQUIRED" />-->
</tx:attributes>
</tx:advice>
<!--配置事务切入-->
<aop:config>
<aop:pointcut id="txPointCut" expression="execution(* mapper.*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut" />
</aop:config>
</beans>
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<package name="pojo"/>
</typeAliases>
</configuration>
只用mybatis 的核心配置文件:mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/MyBatiss?useSSL=true&useUnicode=true&characterEncoding=UTF-8"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</dataSource>
</environment>
</environments>
<!--每一个Mapper.xml都需要在Mybatis核心配置文件中注册!-->
<mappers>
<!--<mapper resource="dao/UserMapper.xml"/>-->
</mappers>
</configuration>
pojo类中的lombok注解
@Data
@AllArgsConstructor
@NoArgsConstructor
日志:log4j.properties 配置文件
#将等级为DEBUG的日志信息输出到console和file这两个目的地,console和file的定义在下面的代码
log4j.rootLogger=DEBUG,console,file
#控制台输出的相关设置
log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.Target = System.out
log4j.appender.console.Threshold=DEBUG
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=[%c]-%m%n
#文件输出的相关设置
log4j.appender.file = org.apache.log4j.RollingFileAppender
log4j.appender.file.File=./log/musecho.log
log4j.appender.file.MaxFileSize=10mb
log4j.appender.file.Threshold=DEBUG
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=[%p][%d{yy-MM-dd}][%c]%m%n
#日志输出级别
log4j.logger.org.mybatis=DEBUG
log4j.logger.java.sql=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.ResultSet=DEBUG
log4j.logger.java.sq1.PreparedStatement=DEBUG
乱码问题:一般SpringMVC自带的乱码过滤器就够了,不行就用终极自定义过滤器
GenericEncodingFilter.java
public class GenericEncodingFilter implements Filter {
public void init(FilterConfig filterConfig) throws ServletException {
}
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
//处理response的字符编码
HttpServletResponse myResponse = (HttpServletResponse) servletResponse;
myResponse.setContentType("text/html;charset=UTF-8");
//转型为与协议相关对象
HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
//对request包装增强
HttpServletRequest myRequest = new MyRequest(httpServletRequest);
filterChain.doFilter(myRequest, servletResponse);
}
public void destroy() {
}
}
//自定义request对象,HttpServletRequest的包装类
class MyRequest extends HttpServletRequestWrapper {
private HttpServletRequest request;
//是否编码的标记
private boolean hasEncode;
//定义一个可以传入HttpServletRequest对象的构造函数,以便对其进行装饰
public MyRequest(HttpServletRequest request) {
super(request);
this.request = request;
}
//对需要增强方法 进行覆盖
public Map getParameterMap() {
//先获得请求方法
String method = request.getMethod();
if (method.equalsIgnoreCase("post")) {
//post请求
try {
//处理post乱码
request.setCharacterEncoding("utf-8");
return request.getParameterMap();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
} else if (method.equalsIgnoreCase("get")) {
//get请求
Map<String, String[]> parameterMap = request.getParameterMap();
if (!hasEncode) {
for (String parameterName : parameterMap.keySet()) {
String[] values = parameterMap.get(parameterName);
if (values != null) {
for (int i = 0; i < values.length; i++) {
try {
//处理get乱码
values[i] = new String(values[i]
.getBytes("ISO-8859-1"), "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}
}
hasEncode = true;
}
return parameterMap;
}
return super.getParameterMap();
}
//取一个值
public String getParameter(String name) {
Map<String, String[]> parameterMap = getParameterMap();
String[] values = parameterMap.get(name);
if (values == null) {
return null;
}
return values[0];//取回参数的第一个值
}
//取所有值
public String[] getParameterValues(String name) {
Map<String, String[]> parameterMap = getParameterMap();
String[] values = parameterMap.get(name);
return values;
}
}
web.xml增加配置
<!--配置SpringMVC的乱码过滤-->
<filter>
<filter-name>encoding</filter-name>
<filter-class>com.musecho.filter.GenericEncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
Spring的注解
@Autowired:自动装配
@Nullable(字段)
@Qualifier(value="xx"):指定一个唯一的bean对象注入
@Component:代替配置文件中bean的注册
@Service
@Controller
@RestController:类上方加这个注解,该类里所有的方法都不会走视图解析器,直接返回字符串。
@Value:代替配置文件中bean的简单属性值的注入
@Scope("xx"):作用域,默认singleton
JavaConfig中使用
@Configuration:代表这是一个配置类,代替applicationConfig.xml
@ComponentScan("pojo"):代替<context:component-scan base-package="pojo"/>
@Bean:注册一个bean,就相当于配置文件中的一个bean标签
@Import:若出现多个配置类,可以使用@Import
导入
javax自带注解:
SpringMVC的注解:
@RequestMapping:用于映射url到控制器类或一个特定的处理方法。@RequestMapping默认是GET方法,在url中传参。
@RequestParam:前端提交的域名称和处理方法的参数名不一致。一致一般也会加。
@ResponseBody:方法上加上这个注解,就不会走视图解析器,直接返回一个字符串。(json用)
@PathVariable:方法中传参要加这个注解
@RequestMapping的参数method=RequestMethod.xxx
@GetMapping //默认请求方式
@PostMapping //相当于@RequestMapping(。。。,method = RequestMethod.POST)
@PutMapping
@DeleteMapping
@PatchMapping
标签:nsa 连接池 没有 定义 自定义 函数 ping prepare prope
原文地址:https://www.cnblogs.com/musecho/p/14436403.html