1 package com.ssm.yjblogs.config; 2 3 import java.util.ArrayList; 4 import java.util.List; 5 import java.util.concurrent.Executor; 6 7 import org.springframework.context.annotation.Bean; 8 import org.springframework.context.annotation.ComponentScan; 9 import org.springframework.context.annotation.ComponentScan.Filter; 10 import org.springframework.context.annotation.Configuration; 11 import org.springframework.context.annotation.FilterType; 12 import org.springframework.http.MediaType; 13 import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter; 14 import org.springframework.scheduling.annotation.AsyncConfigurerSupport; 15 import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor; 16 import org.springframework.stereotype.Controller; 17 import org.springframework.web.servlet.HandlerAdapter; 18 import org.springframework.web.servlet.ViewResolver; 19 import org.springframework.web.servlet.config.annotation.EnableWebMvc; 20 import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter; 21 import org.springframework.web.servlet.view.InternalResourceViewResolver; 22 23 @Configuration 24 //定义Spring MVC扫描的包 25 @ComponentScan(value="com.*", includeFilters= {@Filter(type = FilterType.ANNOTATION, value = Controller.class)}) 26 //启动Spring MVC配置 P389 27 @EnableWebMvc 28 //使用@EnableAsync表明支持异步调用，而我们重写了抽象类AsyncConfigurerSupport的getAsyncExecutor方法 29 //它是获取一个任务池，当在Spring环境中遇到注解@Async就会启动这个任务池的一条线程去运行对应的方法，这样便能执行异步了。 30 //@EnableAsync 31 public class WebConfig extends AsyncConfigurerSupport { 32 33 /*** 34 * 通过注解 @Bean 初始化视图解析器 35 * @return ViewResolver 视图解析器 36 */ 37 @Bean(name="internalResourceViewResolver") 38 public ViewResolver initViewResolver() { 39 InternalResourceViewResolver viewResolver =new InternalResourceViewResolver(); 40 //设置前缀和后缀，这样就能获取由控制器返回的视图逻辑名，进而找到对应的JSP文件 P436 41 viewResolver.setPrefix("/WEB-INF/jsp/");//前缀 42 viewResolver.setSuffix(".jsp");//后缀 43 return viewResolver; 44 } 45 46 /** 47 * 初始化RequestMappingHandlerAdapter，并加载Http的Json转换器 48 * @return RequestMappingHandlerAdapter 对象 49 */ 50 //注解@ResponseBody将标记SpringMVC，将响应结果转变为JSON，这样在控制器返回结果后，在处理器内转变为JSON P453 51 @Bean(name="requestMappingHandlerAdapter") 52 public HandlerAdapter initRequestMappingHandlerAdapter() { 53 //创建RequestMappingHandlerAdapter适配器 54 RequestMappingHandlerAdapter rmhd = new RequestMappingHandlerAdapter(); 55 //HTTP JSON转换器 56 MappingJackson2HttpMessageConverter jsonConverter 57 = new MappingJackson2HttpMessageConverter(); 58 //MappingJackson2HttpMessageConverter接收JSON类型消息的转换 59 MediaType mediaType = MediaType.APPLICATION_JSON_UTF8; 60 List<MediaType> mediaTypes = new ArrayList<MediaType>(); 61 mediaTypes.add(mediaType); 62 //加入转换器的支持类型 63 jsonConverter.setSupportedMediaTypes(mediaTypes); 64 //往适配器加入json转换器 65 rmhd.getMessageConverters().add(jsonConverter); 66 return rmhd; 67 } 68 69 70 // @Override 71 // public Executor getAsyncExecutor() { 72 // ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor(); 73 // taskExecutor.setCorePoolSize(5); 74 // taskExecutor.setMaxPoolSize(10); 75 // taskExecutor.setQueueCapacity(200); 76 // taskExecutor.initialize(); 77 // return taskExecutor; 78 // } 79 }
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package com.ssm.yjblogs.config; import java.util.ArrayList; import java.util.List; import java.util.concurrent.Executor; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.ComponentScan.Filter; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.FilterType; import org.springframework.http.MediaType; import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter; import org.springframework.scheduling.annotation.AsyncConfigurerSupport; import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor; import org.springframework.stereotype.Controller; import org.springframework.web.servlet.HandlerAdapter; import org.springframework.web.servlet.ViewResolver; import org.springframework.web.servlet.config.annotation.EnableWebMvc; import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter; import org.springframework.web.servlet.view.InternalResourceViewResolver; @Configuration //定义Spring MVC扫描的包 @ComponentScan(value="com.*", includeFilters= {@Filter(type = FilterType.ANNOTATION, value = Controller.class)}) //启动Spring MVC配置 P389 @EnableWebMvc //使用@EnableAsync表明支持异步调用，而我们重写了抽象类AsyncConfigurerSupport的getAsyncExecutor方法 //它是获取一个任务池，当在Spring环境中遇到注解@Async就会启动这个任务池的一条线程去运行对应的方法，这样便能执行异步了。 //@EnableAsync public class WebConfig extends AsyncConfigurerSupport { /*** * 通过注解 @Bean 初始化视图解析器 * @return ViewResolver 视图解析器 */ @Bean(name="internalResourceViewResolver") public ViewResolver initViewResolver() { InternalResourceViewResolver viewResolver =new InternalResourceViewResolver(); //设置前缀和后缀，这样就能获取由控制器返回的视图逻辑名，进而找到对应的JSP文件 P436 viewResolver.setPrefix("/WEB-INF/jsp/");//前缀 viewResolver.setSuffix(".jsp");//后缀 return viewResolver; } /** * 初始化RequestMappingHandlerAdapter，并加载Http的Json转换器 * @return RequestMappingHandlerAdapter 对象 */ //注解@ResponseBody将标记SpringMVC，将响应结果转变为JSON，这样在控制器返回结果后，在处理器内转变为JSON P453 @Bean(name="requestMappingHandlerAdapter") public HandlerAdapter initRequestMappingHandlerAdapter() { //创建RequestMappingHandlerAdapter适配器 RequestMappingHandlerAdapter rmhd = new RequestMappingHandlerAdapter(); //HTTP JSON转换器 MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter(); //MappingJackson2HttpMessageConverter接收JSON类型消息的转换 MediaType mediaType = MediaType.APPLICATION_JSON_UTF8; List<MediaType> mediaTypes = new ArrayList<MediaType>(); mediaTypes.add(mediaType); //加入转换器的支持类型 jsonConverter.setSupportedMediaTypes(mediaTypes); //往适配器加入json转换器 rmhd.getMessageConverters().add(jsonConverter); return rmhd; } // @Override // public Executor getAsyncExecutor() { // ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor(); // taskExecutor.setCorePoolSize(5); // taskExecutor.setMaxPoolSize(10); // taskExecutor.setQueueCapacity(200); // taskExecutor.initialize(); // return taskExecutor; // } }