一、问题

Failed to bind properties under 'eureka.client.service-url' to java.util.Map<java.lang.String, java.lang.String>:
    Reason: No converter found capable of converting from type [java.lang.String] to type [java.util.Map<java.lang.String, java.lang.String>]

二、解决办法

1. 没有添加defaultZone属性
   eg:

eureka:
 client:
   service-url:
     defaultZone: http://localhost:7001/eureka/

2. defaultZone和service-url:没有缩进。把defaultZone前加空格，与serviceUrl区分开。就解决了！