【移动应用开发技术】Android中怎么搭建一个后端服务器

【移动应用开发技术】Android中怎么搭建一个后端服务器

这篇文章将为大家详细讲解有关Android中怎么搭建一个后端服务器，文章内容质量较高，因此在下分享给大家做个参考，希望大家阅读完这篇文章后对相关知识有一定的了解。首先我下载了一个myelipse应为我们开发android的eclipse不能创建webproject要不然你去下载个插件也行，下载好以后创建webproject会生成一个目录，然后右键你的这个项目选择myeclipse

->addstructscapabilities...选择2.1finish

OK这样就创建成功这个项目了，下面我贴出来我的项目树供大家参考（感谢yayun0516，他的博文给了我很大的帮助，但是其中有些不足我已经在下面改正了）下面配置structs.xml<?xml

version="1.0"

encoding="UTF-8"

?>

<!DOCTYPE

struts

PUBLIC

"-//Apache

Software

Foundation//DTD

Struts

Configuration

2.1//EN"

"/dtds/struts-2.1.dtd">

<struts>

<package

name="struts2"

extends="struts-default"

namespace="/">

<action

name="getjson"

class="com.shao.action.JSONAction"

method="json">

<result

name="success">index.jsp</result>

</action>

</package>

</struts>只有这一个需要配置，其他的在你添加struct的时候就会自动生成。下面创建类型文件package

com.shao.domain;

public

class

Music

{

private

Integer

id;

private

String

name;

private

String

time;

private

String

author;

public

Integer

getId()

{

return

id;

}

public

void

setId(Integer

id)

{

this.id

=

id;

}

public

String

getName()

{

return

name;

}

public

void

setName(String

name)

{

=

name;

}

public

String

getTime()

{

return

time;

}

public

void

setTime(String

time)

{

this.time

=

time;

}

public

String

getAuthor()

{

return

author;

}

public

void

setAuthor(String

author)

{

this.author

=

author;

}

}然后再创建转json的方法JSONAction：package

com.shao.action;

import

java.io.IOException;

import

java.io.UnsupportedEncodingException;

import

.URLDecoder;

import

java.util.ArrayList;

import

java.util.List;

import

javax.servlet.http.HttpServletRequest;

import

javax.servlet.http.HttpServletResponse;

import

erceptor.ServletRequestAware;

import

erceptor.ServletResponseAware;

import

com.google.gson.Gson;

import

com.opensymphony.xwork2.ActionSupport;

import

com.shao.domain.Music;

public

class

JSONAction

extends

ActionSupport

implements

ServletRequestAware,

ServletResponseAware

{

/**

*

*/

private

static

final

long

serialVersionUID

=

-3604892179657815531L;

private

HttpServletRequest

request;

private

HttpServletResponse

response;

private

String

format;

public

String

getFormat()

{

return

format;

}

public

void

setFormat(String

format)

{

this.format

=

format;

}

@Override

public

void

setServletRequest(HttpServletRequest

request)

{

this.request

=

request;

}

@Override

public

void

setServletResponse(HttpServletResponse

response)

{

this.response

=

response;

}

public

void

json()

{

List<Music>

list

=

new

ArrayList<Music>();

Gson

gson

=

new

Gson();

Music

m1

=

new

Music();

m1.setId(1);

m1.setAuthor("周");

m1.setName("外婆");

m1.setTime("04:04");

list.add(m1);

Music

m2

=

new

Music();

m2.setId(2);

m2.setAuthor("周杰伦");

m2.setName("半兽人");

m2.setTime("04:05");

list.add(m2);

Music

m3

=

new

Music();

m3.setId(3);

m3.setAuthor("周杰伦");

m3.setName("乌克丽丽");

m3.setTime("02:55");

list.add(m3);

java.lang.reflect.Type

type

=

new

com.google.gson.reflect.TypeToken<List<Music>>()

{

}.getType();

//

指定type

String

beanListToJson

=

gson.toJson(list,

type);

//

list转换成json字符串

System.out.println("GSON-->"

+

beanListToJson);

try

{

response.setContentType("application/json;

charset=GBK");

response.setCharacterEncoding("UTF-8");

this.response.getWriter().write(beanListToJson);

}

catch

(IOException

e)

{

e.printStackTrace();

}

}

}

response.setContentType("application/json;charset=GBK");一定要注意，如果不加这句会在你请求服务器数据的时候，中文出现乱码现象，同时在index.jsp中加入了contentType="text/html;charset=GBK"还有不要忘了导入Gson包。完了，就这样服务器就完成了，下面运行一下runas->myeclipseserviceapplication成功后会弹出一个框，上面写着ThisismyJSPpage.这就说明你已经成功创建了服务器。下面打开http://localhost:8080/Test2/getjson.action下面就是服务器返回的内容了。基本就是这样了，又不懂的可以问我。下面说android端的，更简单了。创建我们的项目然后加入xutils和gson包。这是一个新建的项目，在activity_main.xml中我给那个TextView添加了一个id然后在MainActivity中实现如下：package

com.example.test2;

import

com.lidroid.xutils.HttpUtils;

import

com.lidroid.xutils.exception.HttpException;

import

com.lidroid.xutils.http.ResponseInfo;

import

com.lidroid.xutils.http.callback.RequestCallBack;

import

com.lidroid.xutils.http.client.HttpRequest.HttpMethod;

import

android.support.v7.app.ActionBarActivity;

import

android.os.Bundle;

import

android.util.Log;

import

android.view.Menu;

import

android.view.MenuItem;

import

android.view.View;

import

android.widget.TextView;

public

class

MainActivity

extends

ActionBarActivity

{

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

final

TextView

text

=

(TextView)

findViewById(R.id.text);

HttpUtils

httpUtils

=

new

HttpUtils();

httpUtils.send(HttpMethod.POST,

"71:8080/Test2/getjson.action",

new

RequestCallBack<String>()

{

public

void

onFailure(HttpException

arg0,

String

arg1)

{

Log.d("=====================onFailure",

arg1+";"+arg0.toString());

}

public

void

onSuccess(ResponseInfo<String>

arg0)

{

Log.d("=====================onSuccess",

arg0.result);

text.setText(arg0.result);

}

});

}

@Override

public

boolean

onCreateOptionsMenu(Menu

menu)

{

//

Inflate

the

menu;

this

adds

items

to

the

action

bar

if

it

is

present.

getMenuInflater().inflate(R.menu.main,

menu);

return

true;

}

@Override

public

boolean

onOptionsItemSelected(MenuItem

item)

{

//

Handle

action

bar

item

clicks

here.

The

action

bar

will

//

automatically

handle

clicks

on

the

Home/Up

button,

s