springboot整合netty

1.pom.xml

通常的springboot 的pom文件有springboot-starter-web依赖，这样会为项目添加tomcat容器，端口8080，由于这个项目用netty，不需要tomcat,所以用

spring-boot-starter和spring-boot-configuration-processor

 1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 2     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 3     <modelVersion>4.0.0</modelVersion>
 4     <groupId>demo.netty</groupId>
 5     <artifactId>nettyspringboot</artifactId>
 6     <version>0.0.1-SNAPSHOT</version>
 7 
 8     <parent>
 9         <groupId>org.springframework.boot</groupId>
10         <artifactId>spring-boot-starter-parent</artifactId>
11         <version>2.1.6.RELEASE</version>
12         <relativePath /> <!-- lookup parent from repository -->
13     </parent>
14     
15     <dependencies>
16 
17         <dependency>
18             <groupId>org.springframework.boot</groupId>
19             <artifactId>spring-boot-starter</artifactId>
20         </dependency>
21         <dependency>
22             <groupId>org.springframework.boot</groupId>
23             <artifactId>spring-boot-configuration-processor</artifactId>
24             <optional>true</optional>
25         </dependency>
26 
27         <!-- 测试依赖 -->
28         <dependency>
29             <groupId>org.springframework.boot</groupId>
30             <artifactId>spring-boot-starter-test</artifactId>
31             <scope>test</scope>
32         </dependency>
33         <dependency>
34             <groupId>io.netty</groupId>
35             <artifactId>netty-all</artifactId>
36             <version>5.0.0.Alpha1</version>
37         </dependency>
38         <dependency>
39             <groupId>io.netty</groupId>
40             <artifactId>netty-example</artifactId>
41             <version>5.0.0.Alpha1</version>
42         </dependency>
43         <dependency>
44             <groupId>com.google.protobuf</groupId>
45             <artifactId>protobuf-java</artifactId>
46             <version>2.5.0</version>
47         </dependency>
48         <dependency>
49             <groupId>org.jboss.marshalling</groupId>
50             <artifactId>jboss-marshalling</artifactId>
51             <version>1.4.10.Final</version>
52         </dependency>
53     </dependencies>
54     
55     <build>
56         <plugins>
57             <plugin>
58                 <groupId>org.springframework.boot</groupId>
59                 <artifactId>spring-boot-maven-plugin</artifactId>
60             </plugin>
61         </plugins>
62     </build>
63 
64 </project>

2.netty channelhandler线程安全问题和springboot单例模式的矛盾

错误代码：

/*@Bean(name = "httpRequestDecoder")  
    @Scope("prototype")
    public HttpRequestDecoder httpRequestDecoder() {  
        return new HttpRequestDecoder();  
    }  
  
    @Bean(name = "httpObjectAggregator")  
    @Scope("prototype")
    public HttpObjectAggregator httpObjectAggregator() {  
        return new HttpObjectAggregator(65536);  
    }  
    
    @Bean(name = "httpResponseEncoder") 
    @Scope("prototype")
    public HttpResponseEncoder httpResponseEncoder() {  
        return new HttpResponseEncoder();  
    }  
    
    @Bean(name = "chunkedWriteHandler")  
    @Scope("prototype")
    public ChunkedWriteHandler chunkedWriteHandler() {  
        return new ChunkedWriteHandler();  
    }  
    
    @Bean(name = "fileServerHandler")  
    @Scope("prototype")
    public FileServerHandler fileServerHandler() {  
        System.out.println("fileserverhandler创建成功");
        return new FileServerHandler(url);  
    }*/

原因：https://blog.csdn.net/qq_39411208/article/details/88394675

https://blog.csdn.net/shmily_lsl/article/details/81207080

https://blog.csdn.net/julkot/article/details/77445179

https://www.cnblogs.com/silyvin/p/9593368.html