spring boo

Spring-boot提供了一種創建基于Spring的應用程序的快速方法。 對于下一個項目，有一些非常令人信服的理由考慮使用Spring-boot：

原因1：使用spring-boot啟動程序項目進行更簡單的依賴性管理。

考慮使用CR2是使用h2數據庫來實現的，并考慮使用Spring-boot來啟動CRUD Web應用程序所需的工作，其中Spring-Data提供了數據訪問抽象。 該項目所需的Maven Pom如下：

<?xml version="1.0" encoding="UTF-8"?> <project ...<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>0.5.0.BUILD-SNAPSHOT</version></parent><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency><dependency><groupId>org.thymeleaf</groupId><artifactId>thymeleaf-spring3</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jetty</artifactId></dependency> <dependency><groupId>org.hsqldb</groupId><artifactId>hsqldb</artifactId><scope>runtime</scope></dependency> <dependency><groupId>junit</groupId><artifactId>junit</artifactId><scope>test</scope></dependency><dependency><groupId>org.hamcrest</groupId><artifactId>hamcrest-library</artifactId><scope>test</scope></dependency> </dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin> </plugins></build></project>

為了簡潔起見，我刪除了一些內容。

現在，將其與傳統的pom.xml進行比較，其中通常會闡明所有依賴項：

.....<dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version><scope>test</scope></dependency><dependency><groupId>org.hamcrest</groupId><artifactId>hamcrest-core</artifactId><version>1.2.1</version></dependency><dependency><groupId>org.hamcrest</groupId><artifactId>hamcrest-library</artifactId><version>1.2.1</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.16</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>jcl-over-slf4j</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjrt</artifactId><version>${aspectj.version}</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>${aspectj.version}</version></dependency><!-- dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version><scope>provided</scope></dependency --><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>3.0.1</version><scope>provided</scope></dependency> <dependency><groupId>net.sf.flexjson</groupId><artifactId>flexjson</artifactId><version>2.0</version></dependency><!-- Spring dependencies --><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${spring.version}</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>${spring.version}</version><scope>test</scope><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aspects</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${spring.version}</version></dependency><dependency><groupId>com.h2database</groupId><artifactId>h2</artifactId><version>${h2.version}</version></dependency><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-core</artifactId><version>${hibernate.version}</version></dependency><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-entitymanager</artifactId><version>${hibernate.version}</version><exclusions><exclusion><groupId>cglib</groupId><artifactId>cglib</artifactId></exclusion><exclusion><groupId>dom4j</groupId><artifactId>dom4j</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.hibernate.javax.persistence</groupId><artifactId>hibernate-jpa-2.0-api</artifactId><version>1.0.0.Final</version></dependency><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-validator</artifactId><version>4.3.0.Final</version><exclusions><exclusion><groupId>javax.xml.bind</groupId><artifactId>jaxb-api</artifactId></exclusion><exclusion><groupId>com.sun.xml.bind</groupId><artifactId>jaxb-impl</artifactId></exclusion></exclusions></dependency><dependency><groupId>javax.validation</groupId><artifactId>validation-api</artifactId><version>1.0.0.GA</version></dependency><dependency><groupId>javax.transaction</groupId><artifactId>jta</artifactId><version>1.1</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${spring.version}</version></dependency><dependency><groupId>commons-pool</groupId><artifactId>commons-pool</artifactId><version>1.5.4</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.4</version></dependency> <dependency><groupId>commons-dbcp</groupId><artifactId>commons-dbcp</artifactId><version>1.3</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion><exclusion><groupId>commons-pool</groupId><artifactId>commons-pool</artifactId></exclusion><exclusion><groupId>xerces</groupId><artifactId>xerces</artifactId></exclusion><exclusion><groupId>xerces</groupId><artifactId>xercesImpl</artifactId></exclusion><exclusion><groupId>xml-apis</groupId><artifactId>xml-apis</artifactId></exclusion></exclusions></dependency><!-- Jackson JSON Processor --><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-core</artifactId><version>2.2.1</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.2.1</version></dependency><dependency><groupId>com.fasterxml.jackson.module</groupId><artifactId>jackson-module-jaxb-annotations</artifactId><version>2.2.1</version></dependency><dependency><groupId>org.apache.tiles</groupId><artifactId>tiles-core</artifactId><version>2.2.1</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.apache.tiles</groupId><artifactId>tiles-jsp</artifactId><version>2.2.1</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${spring.version}</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>commons-digester</groupId><artifactId>commons-digester</artifactId><version>2.0</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.2.1</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-lang3</artifactId><version>3.1</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><dependency><groupId>javax.el</groupId><artifactId>el-api</artifactId><version>1.0</version><scope>provided</scope></dependency><dependency><groupId>joda-time</groupId><artifactId>joda-time</artifactId><version>1.6</version></dependency><dependency><groupId>javax.servlet.jsp</groupId><artifactId>jsp-api</artifactId><version>2.1</version><scope>provided</scope></dependency><dependency><groupId>org.springframework.security</groupId><artifactId>spring-security-core</artifactId><version>${spring-security.version}</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.security</groupId><artifactId>spring-security-config</artifactId><version>${spring-security.version}</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.security</groupId><artifactId>spring-security-web</artifactId><version>${spring-security.version}</version></dependency><dependency><groupId>org.springframework.security</groupId><artifactId>spring-security-taglibs</artifactId><version>${spring-security.version}</version></dependency><dependency><groupId>com.googlecode.flyway</groupId><artifactId>flyway-core</artifactId><version>1.7</version></dependency><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-jpa</artifactId><version>${spring-data-jpa.version}</version></dependency> </dependencies> ...

這確實是對Spring特定依賴項管理方式的重大改進。

原因2：具有自動配置的快速獨立模式

啟動可運行的Web應用程序所需要做的就是運行–“ mvn spring：boot”，其余的工作由Spring boot完成。 它提供了一種使用嵌入式tomcat或jetty容器快速運行應用程序的方法，并基于類路徑中可用的庫自動配置應用程序，而無需用戶提供任何明確的配置，例如。 如果在類路徑中找到hsqldb庫，則自動將hsqldb配置為嵌入式數據庫的數據源，如果在類路徑中找到thymeleaf jar，則自動將thymeleaf配置為模板引擎，如果在類路徑中找到了hibernate庫，則自動使用hibernate作為JPA提供者。 這樣可以逐步增強正在運行的應用程序的開發– Spring boot為開發人員提供了一種方法，可以快速引導應用程序并對其進行原型設計，然后用更可靠的替代方法緩慢地替換一些自動配置的組件–改為使用Postgres DB hsqldb等

原因3：固執己見的依賴性

Spring Boot提供了一套經過認真測試的，經過良好測試的依賴項，這些依賴項與Spring項目生態系統可以很好地協同工作。 例如 使用slf4j作為日志依賴項進行logback，使用Servlet 3.0+ API，使用Jackson 2.2進行json處理，使用thymeleaf進行網頁模板化。

結論：

Spring-boot項目仍處于繁重的開發過程中，但是即使在目前的狀態下，它也具有使用Spring傘項目大大簡化應用程序開發方面的巨大潛力。

這是一個使用Spring-boot的小型參考應用程序– https://github.com/bijukunjummen/spring-boot-mvc-test.git

參考： 為您的下一個基于Spring的應用程序考慮使用spring-boot的原因！ 來自我們的JCG合作伙伴 Biju Kunjummen在all和其他博客上。

翻譯自: https://www.javacodegeeks.com/2013/09/reasons-to-consider-spring-boot-for-your-next-spring-based-application.html

spring boo

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