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我一直在尝试使用maven构建代码.但我遇到了一个错误.这个代码可以在这个github repo上找到.谷歌播放爬虫

我的系统配置由maven显示如下:

Apache Maven 3.0.5 (r01de14724cdef164cd33c7c8c2fe155faf9602da; 2013-02-19 19:21:28+0530)
Maven home: /Users/tushar/Downloads/apache-maven-3.0.5
Java version: 1.6.0_65, vendor: Apple Inc.
Java home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Default locale: en_US, platform encoding: MacRoman
OS name: "mac os x", version: "10.9", arch: "x86_64", family: "mac"

以下是错误的Maven跟踪:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project googleplaycrawler: Compilation failure -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project googleplaycrawler: Compilation failure
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at …

我正在尝试使用from_json方法构建一个文档对象.object.save()不会抛出任何错误,但文档未插入mongo.

另一方面,如果我通过为每个字段赋值来创建对象,它可以正常工作.

我无法找到原因.以下是两种情况的代码.

from flask import Flask
from flask.ext.mongoengine import MongoEngine
import json, datetime

app = Flask(__name__)
app.config["MONGODB_SETTINGS"] = {'DB': 'test','host': 'localhost'}
app.config["SECRET_KEY"] = "mySecretKey"

db = MongoEngine(app)
class User(db.Document):
    user_id = db.StringField(max_length=16, primary_key = True)
    username = db.StringField(min_length=8)
    email = db.EmailField(required = True, unique = True)
    password = db.StringField(required = True)
    date_of_birth = db.DateTimeField()
    gender = db.StringField(choices = ('M', 'F'))

'''
    This one works. This will add a user in local mongodb(test)
'''
u1 = User()
u1.username = 'test12345' …

在查询pymongo时,我得到一个字典对象,可以直接作为对api请求的响应发送.mongoengine在查询数据库时返回Document对象的位置.因此,我必须解析每个对象,然后才能将其作为api中的响应发送.

这是我在mongoengine中查询的方式.

users = User.objects(location = 'US')

这将返回一个BaseQueryList包含User模型类型对象的对象.相反,我需要它应该返回一个用户的字典类型对象列表.