從SpringBoot1.5升級(jí)到2.0-創(chuàng)新互聯(lián)-四川平武建站

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從SpringBoot1.5升級(jí)到2.0-創(chuàng)新互聯(lián)

POM


    org.springframework.boot
    spring-boot-starter-parent
    1.5.10.RELEASE


    org.springframework.boot
    spring-boot-starter-parent
    2.0.7.RELEASE

Spring Data

Spring Data的一些方法進(jìn)行了重命名：

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findOne(id) -> findById(id) （返回的是Optional）
delete(id) -> deleteById(id)
exists(id) -> existsById(id)
findAll(ids) -> findAllById(ids)

配置

在升級(jí)時(shí)，可以在pom中增加spring-boot-properties-migrator，這樣在啟動(dòng)時(shí)會(huì)提示需要更改的配置：


    org.springframework.boot
    spring-boot-properties-migrator
    runtime

其中改動(dòng)較大的是security（The security auto-configuration is no longer customizable，A global security auto-configuration is now provided）、management、banner、server等。

security

security開(kāi)頭的配置及management.security均已過(guò)期，如以下的配置不再支持，需要調(diào)整到代碼中：

security:
  ignored: /api-docs,/swagger-resources/**,/swagger-ui.html**,/webjars/**

management

management:
  security:
    enabled: false
  port: 8090

修改為：

management:
  server:
    port: 8090

datasource

datasource:
    initialize: false

修改為：

datasource:
    initialization-mode: never

如使用PostgreSQL，可能會(huì)報(bào)錯(cuò)：Method org.postgresql.jdbc.PgConnection.createClob() is not yet implemented hibernate，需修改配置：

jpa:
    database-platform: org.hibernate.dialect.PostgreSQLDialect
    properties:
       hibernate:
         default_schema: test
         jdbc:
           lob:
             non_contextual_creation: true

banner調(diào)整為spring.banner
server調(diào)整為server.servlet

更多需要調(diào)整的參數(shù)請(qǐng)看文末參考文檔。

Security

WebSecurityConfigurerAdapter

security.ignored

@Override
public void configure(WebSecurity web) throws Exception {
   web.ignoring().antMatchers("/api-docs", "/swagger-resources/**", "/swagger-ui.html**", "/webjars/**");
}

AuthenticationManager

如在代碼中注入了AuthenticationManager,

@Autowired
private AuthenticationManager authenticationManager;

在啟動(dòng)時(shí)會(huì)報(bào)錯(cuò)：Field authenticationManager required a bean of type 'org.springframework.security.authentication.AuthenticationManager' that could not be found.請(qǐng)?jiān)赪ebSecurityConfigurerAdapter中增加以下代碼：

@Bean
@Override
public AuthenticationManager authenticationManagerBean() throws Exception {
    return super.authenticationManagerBean();
}

Actuator

配置屬性變化

Old property	New property
endpoints.id.*	management.endpoint.id.*
endpoints.cors.*	management.endpoints.web.cors.*
endpoints.jmx.*	management.endpoints.jmx.*
management.address	management.server.address
management.context-path	management.server.servlet.context-path
management.ssl.*	management.server.ssl.*
management.port	management.server.port

management.endpoints.web.base-path的默認(rèn)值為/actuator，即Actuator訪問(wèn)路徑前部增加了actuator([/actuator/health]，[/actuator/info])，這可以在啟動(dòng)日志中看到。
因management.security不再支持，權(quán)限配置需添加到WebSecurityConfigurerAdapter中：

.authorizeRequests()
.requestMatchers(EndpointRequest.to("health", "info")).permitAll()

Endpoint變化

Endpoint	Changes
/actuator	No longer available. There is, however, a mapping available at the root of management.endpoints.web.base-path that provides links to all the exposed endpoints.
/auditevents	The after parameter is no longer required
/autoconfig	Renamed to /conditions
/docs	No longer available (the API documentation is part of the published documentation now)
/health	Rather than relying on the sensitive flag to figure out if the health endpoint had to show full details or not, there is now a management.endpoint.health.show-details option: never, always, when-authorized. By default, /actuator/health is exposed and details are not shown.
/trace	Renamed to /httptrace

新特性

Configuration Property Binding

可以在代碼中直接使用Binder API從配置文件中讀取內(nèi)容：

public class Person implements EnvironmentAware {
        private Environment environment;

        @Override
        public void setEnvironment(Environment environment) {
            this.environment = environment;
        }

        public void bind() {
            List people = Binder.get(environment)
            .bind("my.property", Bindable.listOf(PersonName.class))
            .orElseThrow(IllegalStateException::new);
        }
}

YAML配置

my:
  property:
  - first-name: Jane
    last-name: Doe
  - first-name: John
    last-name: Doe

Spring Data Web Configuration

新增spring.data.web配置來(lái)設(shè)置分頁(yè)和排序：

# DATA WEB (SpringDataWebProperties)
spring.data.web.pageable.default-page-size=20 # Default page size.
spring.data.web.pageable.max-page-size=2000 # Maximum page size to be accepted.
spring.data.web.pageable.one-indexed-parameters=false # Whether to expose and assume 1-based page number indexes.
spring.data.web.pageable.page-parameter=page # Page index parameter name.
spring.data.web.pageable.prefix= # General prefix to be prepended to the page number and page size parameters.
spring.data.web.pageable.qualifier-delimiter=_ # Delimiter to be used between the qualifier and the actual page number and size properties.
spring.data.web.pageable.size-parameter=size # Page size parameter name.
spring.data.web.sort.sort-parameter=sort # Sort parameter name.

支持自定義JdbcTemplate

# JDBC (JdbcProperties)
spring.jdbc.template.fetch-size=-1 # Number of rows that should be fetched from the database when more rows are needed.
spring.jdbc.template.max-rows=-1 # Maximum number of rows.
spring.jdbc.template.query-timeout= # Query timeout. Default is to use the JDBC driver's default configuration. If a duration suffix is not specified, seconds will be used.

支持hibernate自定義命名策略
Reactive

更多新特性請(qǐng)查看Release Notes。

Swagger


    io.springfox
    springfox-swagger2
    2.9.2


    io.springfox
    springfox-swagger-ui
    2.9.2

Swagger 2.9版本，增加了對(duì)@ApiParam屬性example的處理，在Swagger UI和文檔中會(huì)顯示，因此要注意設(shè)置合適的example值：

@ApiOperation(value = "Delete airline by id")
@GetMapping("/airlines/delete/{airlineId}")
public void deleteAirline(@ApiParam(required = true, example = "123") @PathVariable Long airlineId)

否則你會(huì)看到Warn日志：
AbstractSerializableParameter

@JsonProperty("x-example")
public Object getExample() {
    if (example == null) {
        return null;
    }
    try {
        if (BaseIntegerProperty.TYPE.equals(type)) {
            return Long.valueOf(example);
        } else if (DecimalProperty.TYPE.equals(type)) {
            return Double.valueOf(example);
        } else if (BooleanProperty.TYPE.equals(type)) {
            if ("true".equalsIgnoreCase(example) || "false".equalsIgnoreCase(defaultValue)) {
                return Boolean.valueOf(example);
            }
        }
    } catch (NumberFormatException e) {
        LOGGER.warn(String.format("Illegal DefaultValue %s for parameter type %s", defaultValue, type), e);
    }
    return example;
}

另外Swagger 2.9.2會(huì)為org.springframework.data.domain.Pageable自動(dòng)增加@ApiImplicitParams。

參考文檔

Spring Boot Reference Guide 2.0.7.RELEASE
Spring Boot 2.0 Migration Guide
Spring Boot 2.0 Configuration Changelog
Spring Boot 2.0 Release Notes
Spring Boot Relaxed Binding 2.0

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