io.js下MongoDB驱动的问题
操作系统：Mac OS X 环境：xcode command line tools、io.js 2.2.1、npm 2.11.0
app.js
var express = require('express'),
cons = require('consolidate'),
mongodb = require('mongodb');
package.json
{
"name":"intro_npm",
"version":"0.0.0",
"description": "npm introduction",
"main": "app.js",
"dependencies": {
"consolidate": "~0.9.1",
"express": "~3.2.6",
"mongodb": "~1.3.10"
},
"author": "Shaun Verch",
"license": "BSD"
}
bash 执行npm install的结果
npm WARN package.json intro_npm@0.0.0 No repository field.
npm WARN package.json intro_npm@0.0.0 No README data
npm WARN package.json intro_npm@0.0.0 license should be a valid SPDX license expression
> kerberos@0.0.3 install /Users/wangzishi/Test/intro_npm/node_modules/mongodb/node_modules/kerberos
> (node-gyp rebuild 2> builderror.log) || (exit 0)
CXX(target) Release/obj.target/kerberos/lib/kerberos.o
> bson@0.2.5 install /Users/wangzishi/Test/intro_npm/node_modules/mongodb/node_modules/bson
> (node-gyp rebuild 2> builderror.log) || (exit 0)
CXX(target) Release/obj.target/bson/ext/bson.o
consolidate@0.9.1 node_modules/consolidate
express@3.2.6 node_modules/express
├── methods@0.0.1
├── fresh@0.1.0
├── range-parser@0.0.4
├── cookie-signature@1.0.1
├── buffer-crc32@0.2.1
├── cookie@0.1.0
├── commander@0.6.1
├── mkdirp@0.3.4
├── debug@2.2.0 (ms@0.7.1)
├── send@0.1.0 (mime@1.2.6)
└── connect@2.7.11 (pause@0.0.1, bytes@0.2.0, qs@0.6.5, cookie@0.0.5, send@0.1.1, formidable@1.0.14)
mongodb@1.3.23 node_modules/mongodb
├── kerberos@0.0.3
└── bson@0.2.5
看起来安装应该没有问题 但是执行$ iojs app.js的时候控制台输出：
Failed to load c++ bson extension, using pure JS version
为啥bson组建加载失败呢？install的时候也没有warning或者error。 求指教
5 回复
这个和 io.js 没关系，在 nodejs 下也会出现。应该是你的build环境缺东西。 http://stackoverflow.com/questions/21656420/failed-to-load-c-bson-extension
找到原因了，是我的mongodb的版本老了
把package.json里面的"mongodb": "~1.3.10"改成"mongodb": "^2.0.33"
然后执行
$ npm update
控制台输出
> kerberos@0.0.12 install /Users/wangzishi/Test/intro_npm/node_modules/mongodb/node_modules/mongodb-core/node_modules/kerberos
> (node-gyp rebuild 2> builderror.log) || (exit 0)
CXX(target) Release/obj.target/kerberos/lib/kerberos.o
CXX(target) Release/obj.target/kerberos/lib/worker.o
CC(target) Release/obj.target/kerberos/lib/kerberosgss.o
CC(target) Release/obj.target/kerberos/lib/base64.o
CXX(target) Release/obj.target/kerberos/lib/kerberos_context.o
SOLINK_MODULE(target) Release/kerberos.node
SOLINK_MODULE(target) Release/kerberos.node: Finished
npm WARN installMany nopt was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany npmlog was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany request was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany semver was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany tar was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany tar-pack was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany mkdirp was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany rc was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany rimraf was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
\
> bson-ext@0.1.7 install /Users/wangzishi/Test/intro_npm/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext
> (node-pre-gyp install --fallback-to-build) || (node-gyp rebuild 2> builderror.log) || (exit 0)
CXX(target) Release/obj.target/bson/ext/bson.o
../ext/bson.cc:825:17: warning: 'DecodeBytes' is deprecated: Use DecodeBytes(isolate, ...) [-Wdeprecated-declarations]
ssize_t len = DecodeBytes(args[0], BINARY);
^
/Users/wangzishi/.node-gyp/2.2.1/src/node.h:318:32: note: 'DecodeBytes' has been explicitly marked deprecated here
inline ssize_t DecodeBytes(
^
/Users/wangzishi/.node-gyp/2.2.1/src/node.h:66:42: note: expanded from macro 'NODE_DEPRECATED'
__attribute__((deprecated(message))) declarator
^
../ext/bson.cc:833:3: warning: 'DecodeWrite' is deprecated: Use DecodeWrite(isolate, ...) [-Wdeprecated-declarations]
DecodeWrite(data, len, args[0], BINARY);
^
/Users/wangzishi/.node-gyp/2.2.1/src/node.h:331:32: note: 'DecodeWrite' has been explicitly marked deprecated here
inline ssize_t DecodeWrite(char* buf,
^
/Users/wangzishi/.node-gyp/2.2.1/src/node.h:66:42: note: expanded from macro 'NODE_DEPRECATED'
__attribute__((deprecated(message))) declarator
^
../ext/bson.cc:928:28: warning: 'Encode' is deprecated: Use Encode(isolate, ...) [-Wdeprecated-declarations]
Local<Value> bin_value = Encode(serialized_object, object_size, BINARY)->ToString();
^
/Users/wangzishi/.node-gyp/2.2.1/src/node.h:299:45: note: 'Encode' has been explicitly marked deprecated here
inline v8::Local<v8::Value> Encode(
^
/Users/wangzishi/.node-gyp/2.2.1/src/node.h:66:42: note: expanded from macro 'NODE_DEPRECATED'
__attribute__((deprecated(message))) declarator
^
3 warnings generated.
SOLINK_MODULE(target) Release/bson.node
SOLINK_MODULE(target) Release/bson.node: Finished
mongodb@2.0.33 node_modules/mongodb
├── readable-stream@1.0.31 (isarray@0.0.1, inherits@2.0.1, string_decoder@0.10.31, core-util-is@1.0.1)
└── mongodb-core@1.1.32 (kerberos@0.0.12, bson@0.3.2)
虽然看起来好多坑爹的警告，不过貌似不再会提示bson加载失败了。
node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/ext/index.js 看下有惊喜。
