亂碼解決
- post亂碼
web.xml
<!-- 解決post亂碼 -->
<filter>
<filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
- get亂碼
方式一:設置mysql 編碼爲utf-8 (一勞永逸)
方式二:手動解碼再編碼
String string=new String(result.getBytes("iso8859-1"),"utf-8");
- response亂碼
方式一:推薦
springmvc.xml 頭文件一定要是4.0及以上纔可以
<mvc:annotation-driven >
<!-- 消息轉換器 -->
<mvc:message-converters register-defaults="true">
<!--解決respnse亂碼-->
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes" value="text/html;charset=UTF-8"/>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
方式二:自己指定相應格式
@RequestMapping(value = "/test",produces = "text/html;charset=utf-8")
@ResponseBody
public String test()
{
return "測試中文亂碼";
}
mybatis相關
maven mybatis自動生成插件
pom.xml
<!--mybatis逆向工程插件-->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
generatorConfig.xml 放到根目錄
設置驅動位置 數據庫 用戶名 密碼 需要生成的表
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<!-- 制定mysql的驅動包的路徑 千萬別放中文路徑下 -->
<classPathEntry location="C:\Users\Administrator\.m2\repository\mysql\mysql-connector-java\5.1.32\mysql-connector-java-5.1.32.jar"/>
<context id="testTables" targetRuntime="MyBatis3">
<commentGenerator>
<!-- 是否去除自動生成的註釋 true:是 : false:否 -->
<property name="suppressAllComments" value="true"/>
</commentGenerator>
<!--數據庫連接的信息:驅動類、連接地址、用戶名、密碼 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/demo" userId="root"
password="root">
</jdbcConnection>
<!-- 默認false,把JDBC DECIMAL 和 NUMERIC 類型解析爲 Integer,爲 true時把JDBC DECIMAL 和
NUMERIC 類型解析爲java.math.BigDecimal -->
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!-- targetProject:生成PO類的位置 -->
<javaModelGenerator targetPackage="cn.zsp.ssm.pojo"
targetProject="./src">
<!-- enableSubPackages:是否讓schema作爲包的後綴 -->
<property name="enableSubPackages" value="false"/>
<!-- 從數據庫返回的值被清理前後的空格 -->
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!-- targetProject:mapper映射文件生成的位置 -->
<sqlMapGenerator targetPackage="cn.zsp.ssm.mapper"
targetProject="./src">
<!-- enableSubPackages:是否讓schema作爲包的後綴 -->
<property name="enableSubPackages" value="false"/>
</sqlMapGenerator>
<!-- targetPackage:mapper接口生成的位置 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="cn.zsp.ssm.mapper"
targetProject="./src">
<!-- enableSubPackages:是否讓schema作爲包的後綴 -->
<property name="enableSubPackages" value="false"/>
</javaClientGenerator>
<!-- 指定數據庫表 -->
<table schema="" tableName="user"></table>
</context>
</generatorConfiguration>
運行:
mybatis-generator:generate -e 運行
分頁插件
pageHelper
基本使用
@Service
public class UserServiceImpl implements UserService {
@Autowired
TbUserMapper userMapper;
@Override
public PageResult list(int page, int rows) {
//設置當前頁 和行數
PageHelper.startPage(page,rows);
List<TbUser> tbUsers = userMapper.selectByExample(new TbUserExample());
//從pageinfo中取結果
PageInfo<TbUser> pageInfo=new PageInfo<TbUser>(tbUsers);
return PageResult.buid(page,pageInfo.getList(),pageInfo.getPages());
}
}
模板引擎
使用freemarker代替jsp
1.添加依賴
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>${freemarker.version}</version>
</dependency>
2.springmvc.xml 相關配置 取消jsp的視圖 並添加如下內容
<!-- freemarker的配置 -->
<bean id="freemarkerConfig"
class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
<property name="templateLoaderPath" value="/WEB-INF/ftl/"/>
<property name="defaultEncoding" value="utf-8"/>
<property name="freemarkerSettings">
<props>
<prop key="template_update_delay">10</prop>
<prop key="locale">zh_CN</prop>
<prop key="datetime_format">yyyy-MM-dd</prop><!-- 時間格式化 -->
<prop key="date_format">yyyy-MM-dd</prop>
<prop key="number_format">#.##</prop>
</props>
</property>
</bean>
<!-- 配置freeMarker視圖解析器 -->
<bean
class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
<property name="cache" value="true"/>
<property name="prefix" value=""/><!-- 上面已經配了,這裏就不用配啦 -->
<property name="suffix" value=".ftl"/>
<property name="contentType" value="text/html;charset=UTF-8"/>
<property name="viewClass"
value="org.springframework.web.servlet.view.freemarker.FreeMarkerView"/>
<property name="allowSessionOverride" value="true"/>
<property name="allowRequestOverride" value="true"/>
<property name="exposeSpringMacroHelpers" value="false"/>
<property name="exposeRequestAttributes" value="true"/>
<property name="exposeSessionAttributes" value="true"/>
<property name="requestContextAttribute" value="request"/>
</bean>