SpringBoot 2 迁移 ConfigurationProperties 无法将属性绑定到 String[]

问题描述

我只是从 Spring boot 1.5.8 迁移到 2.0.0

I just migrate from Spring boot 1.5.8 to 2.0.0

我解决了大部分迁移错误，但我对此一无所知:

I solved most of migration errors, but I have no idea for this:

@Configuration
public class LdapConfiguration {

    @Bean
    @ConfigurationProperties(prefix = "ldap")
    public LdapContextSource contextSource() {
        return new LdapContextSource();
    }

    @Bean(name = "ldapTemplate")
    public LdapTemplate ldapTemplate(ContextSource contextSource) {
        return new LdapTemplate(contextSource);
    }
}

我的自定义值(所有变量都是 var env 属性，这就是分隔符是_"的原因):

My custom values (all variables are var env property, this is why the separator is "_"):

LDAP_URLS=ldaps://ldap-url.com:636/

错误:

Description:

Failed to bind properties under 'ldap.urls' to java.lang.String[]:

    Reason: Unable to get value for property urls

Action:

Update your application's configuration

看起来它无法将我的字符串值 ldap.urls 绑定到 String[]，我尝试在我的属性中使用 2 个值，用 coma 分隔.

looks like it can't bind my string value ldap.urls to String[], I tried with 2 values in my property separated by coma.

有什么想法吗?

推荐答案

出于某种原因，Spring Boot 无法绑定到克隆的数组.我提出了 #12478 因为我相信这是一个回归2.0 中的新活页夹.

For some reason, Spring Boot can't bind to an array that is cloned. I've raised #12478 as I believe this is a regression in the new binder in 2.0.

现在从 Spring Boot 2.0.1 开始修复

this is now fixed as of Spring Boot 2.0.1

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