我们有时候很难将某些文件导入Solr。看起来某些文档有奇怪的 meta数据（值），不确定它是否来自古怪的文字处理器或其他东西。请看这里的两个例子：

Type:        Solarium\Exception\HttpException
Message:     Solr HTTP error: OK (400)
{"responseHeader":{"status":400,"QTime":49},"error":{"metadata":["error-class","org.apache.solr.common.SolrException","root-error-class","java.lang.NumberFormatException"],"msg":"ERROR: [doc=3932487729] Error adding field 'brightness_value'='6.18' msg=For input string: \"6.18\"","code":400}}

还有

Type:        Solarium\Exception\HttpException
Severity: error --> Exception: Solr HTTP error: OK (400)
{"responseHeader":{"status":400,"QTime":72},"error":{"metadata":["error-class","org.apache.solr.common.SolrException","root-error-class","java.lang.NumberFormatException"],"msg":"ERROR: [doc=16996] Error adding field 'version'='5.3.1' msg=For input string: \"5.3.1\"","code":400}}

我们如何防止这些问题呢？我们无法控制文档，所以需要在服务器上修复它。