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