1.生成自己的注解（為了確定在哪些位置使用）

/** * 關閉patch delete的model處理，否則會報錯 */@Target({ElementType.METHOD})@Retention(RetentionPolicy.RUNTIME)@Documentedpublic @interface AliasProcessor {}

/** * 處理Get 請求參數的駝峰問題 * @author lw */@Target(ElementType.FIELD)@Retention(RetentionPolicy.RUNTIME)public @interface ValueFrom { /** * 參數名(別名)列表 */ String[] value();}

2.實現自己的ServletModelAttributeMethodProcessor

/** * 為了減少使用 @RequestPath 將get參數封裝到實體類中 重寫ModelAttributeMethodProcessor * 注：由于get請求為非raw請求，spring默認使用@ModelArrtribute注解，不會自動將下劃線的數據轉為駝峰數據 * 所以需要自定義一個處理器，進行該操作 * * @author lw */public class AliasModelAttributeMethodProcessor extends ServletModelAttributeMethodProcessor { private ApplicationContext applicationContext; /** * 過濾掉patch請求，防止報錯 */ @Override public boolean supportsParameter(MethodParameter parameter) { return parameter.getMethodAnnotation(AliasProcessor.class)!=null; } public AliasModelAttributeMethodProcessor(ApplicationContext applicationContext) { super(true); this.applicationContext=applicationContext; } @Override protected void bindRequestParameters(WebDataBinder binder, NativeWebRequest request) { AliasDataBinder aliasBinder = new AliasDataBinder(binder.getTarget(), binder.getObjectName()); RequestMappingHandlerAdapter requestMappingHandlerAdapter = this.applicationContext.getBean(RequestMappingHandlerAdapter.class); requestMappingHandlerAdapter.getWebBindingInitializer().initBinder(aliasBinder); aliasBinder.bind(request.getNativeRequest(ServletRequest.class)); }}

3.自己的數據處理類

/** * 重新數據處理類 * @author lw */public class AliasDataBinder extends ExtendedServletRequestDataBinder { public AliasDataBinder(Object target, String objectName) { super(target, objectName); } /** * 復寫addBindValues方法 * @param mpvs 這里面存的就是請求參數的key-value對 * @param request 請求本身, 這里沒有用到 */ @Override protected void addBindValues(MutablePropertyValues mpvs, ServletRequest request) { super.addBindValues(mpvs, request); // 處理要綁定參數的對象 Class<?> targetClass = getTarget().getClass(); // 獲取對象的所有字段(拿到Test類的字段) Field[] fields = targetClass.getDeclaredFields(); // 處理所有字段 for (Field field : fields) { // 原始字段上的注解 ValueFrom valueFromAnnotation = field.getAnnotation(ValueFrom.class); // 若參數中包含原始字段或者字段沒有別名注解, 則跳過該字段 if (mpvs.contains(field.getName()) || valueFromAnnotation == null) { continue; } // 參數中沒有原始字段且字段上有別名注解, 則依次取別名列表中的別名, 在參數中最先找到的別名的值賦值給原始字段 for (String alias : valueFromAnnotation.value()) { // 若參數中包含該別名, 則把別名的值賦值給原始字段 if (mpvs.contains(alias)) { // 給原始字段賦值 mpvs.add(field.getName(), mpvs.getPropertyValue(alias).getValue()); // 跳出循環防止取其它別名 break; } } } }}

4.注冊到spring中

/** * 為了獲得context需要實現ApplicationContextAware接口 * @author lw */@Configurationpublic class WebmvcConfig implements ApplicationContextAware { @Autowired private RequestMappingHandlerAdapter adapter; private ApplicationContext applicationContext = null; @Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { this.applicationContext=applicationContext; } /** * 將自定義的processor添加到adapter中 */ @PostConstruct protected void injectSelfMethodArgumentResolver() { List<HandlerMethodArgumentResolver> argumentResolvers = new ArrayList<>(); argumentResolvers.add(new AliasModelAttributeMethodProcessor(this.applicationContext)); argumentResolvers.addAll(adapter.getArgumentResolvers()); adapter.setArgumentResolvers(argumentResolvers); }}

補充知識：springboot - mybatis - 下劃線與駝峰自動轉換 mapUnderscoreToCamelCase

以前都是在mybatis.xml中來配置，但是spring boot不想再用xml配置文件。網上搜尋了好久，才找到設置辦法：

sessionFactoryBean.getObject().getConfiguration().setMapUnderscoreToCamelCase(true);

db配置文件源碼：

package com.vip.qa.vop.config;import com.alibaba.druid.pool.DruidDataSource;import org.apache.ibatis.session.SqlSessionFactory;import org.mybatis.spring.SqlSessionFactoryBean;import org.mybatis.spring.annotation.MapperScan;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.beans.factory.annotation.Value;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.Primary;import org.springframework.core.io.support.PathMatchingResourcePatternResolver;import org.springframework.jdbc.datasource.DataSourceTransactionManager;import javax.sql.DataSource;import java.util.Properties;/** * Created by danny.yao on 2017/10/25. */@Configuration@MapperScan(basePackages = VOPDataSourceConfig.PACKAGE, sqlSessionFactoryRef = 'vopSqlSessionFactory')public class VOPDataSourceConfig { static final String PACKAGE = 'com.vip.qa.vop.mapper.vop'; @Value('${vop.datasource.url}') private String dbUrl; @Value('${vop.datasource.username}') private String dbUser; @Value('${vop.datasource.password}') private String dbPassword; @Value('${vop.datasource.driver-class-name}') private String dbDriver; @Bean(name = 'vopDataSource') @Qualifier @Primary public DataSource vopDataSource() { DruidDataSource dataSource = new DruidDataSource(); dataSource.setDriverClassName(dbDriver); dataSource.setUrl(dbUrl); dataSource.setUsername(dbUser); dataSource.setPassword(dbPassword); return dataSource; } @Bean(name = 'vopSqlSessionFactory') @Qualifier @Primary public SqlSessionFactory vopSqlSessionFactory(@Qualifier('vopDataSource') DataSource scepDataSource) throws Exception { final SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean(); sessionFactoryBean.setDataSource(scepDataSource); PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); sessionFactoryBean.setMapperLocations(resolver.getResources('classpath:/mybatis/vop/*.xml')); sessionFactoryBean.getObject().getConfiguration().setMapUnderscoreToCamelCase(true); return sessionFactoryBean.getObject(); }// @Bean(name = 'vopTransactionManager')// @Qualifier// public DataSourceTransactionManager testDataTransactionManager() {// return new DataSourceTransactionManager(vopDataSource());// }}

以上這篇為spring get請求添加自定義的參數處理操作(如下劃線轉駝峰)就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持好吧啦網。