mode_edit codeAPI / @angular/common/httpHttpParameterCodeclinkinterface 稳定interface HttpParameterCodec { encodeKey(key: string): string encodeValue(value: string): string decodeKey(key: string): string decodeValue(value: string): string }实现类link HttpUrlEncodingCodec 方法linkencodeKey() linkmode_edit codeencodeKey(key: string): string参数keyType: string.返回值stringencodeValue() linkmode_edit codeencodeValue(value: string): string参数valueType: string.返回值stringdecodeKey() linkmode_edit codedecodeKey(key: string): string参数keyType: string.返回值stringdecodeValue() linkmode_edit codedecodeValue(value: string): string参数valueType: string.返回值string