由于公司需求,要做安卓软件实现查询企业Erp系统的报表资料, 在网上找了各种资料,想实现手机直接连接Sqlserver,折腾很久都以失败告终。 目前,安卓不能直接连接Sqlserver,安卓不能用PC的JDBC驱动Jar包提供的API连接数据库。 比较快捷的方法是利用WebServi
由于公司需求,要做安卓软件实现查询企业Erp系统的报表资料,
在网上找了各种资料,想实现手机直接连接Sqlserver,折腾很久都以失败告终。
目前,安卓不能直接连接Sqlserver,安卓不能用PC的JDBC驱动Jar包提供的API连接数据库。
比较快捷的方法是利用WebService作为桥梁,安卓端获得WebService提供的数据然后进行xml解析。
使用Visual Stuido能很快捷的创建、发布WebService服务,安卓只要根据SOAP协议和提供的函数接口 向WebService发送请求,就能得到xml数据。
在Visual Stuido 2012下创建、发布WebService方法:
步骤一 创建WebService项目
新建-选择“Web”-选择“ASP.NEt 空 Web应用程序”
步骤二 添加Web服务
右击项目名,选择“添加”-选择“Web服务”,输入项名称,确定。
接着在asmx.cs文件中编写安卓要访问的函数。
发布至iis方法:(前提是先安装IIS,建立一个站点,安装配置iis方法网上教程很多)
右击项目名-选择“发布”-在配置文件中新建配置文件-下一步,发布方法选择“文件系统”-下一步,选择“目标位置”发布到IIS已创建好的站点中-下一步,“配置”选择release,最后发布。
到此为止,只要打开IIS服务,在浏览器输入你电脑的IP:端口号/webservice文件,就能访问到WebService的接口了
若要将安卓应用在广域网下查看Sqlserver数据,必须配置WebService的Web.config文件,允许远程访问函数接口
在Web.config文件的
<!-- 添加如下代码,允许远程调用函数接口--> <webservices> <protocols> <add name="HttpSoap"></add> <add name="HttpPost"></add> <add name="HttpGet"></add> <add name="Documentation"></add> </protocols> </webservices>
ps:后期会补充WebService和安卓客户端的代码

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

The steps to build a MySQL database include: 1. Create a database and table, 2. Insert data, and 3. Conduct queries. First, use the CREATEDATABASE and CREATETABLE statements to create the database and table, then use the INSERTINTO statement to insert the data, and finally use the SELECT statement to query the data.

MySQL is suitable for beginners because it is easy to use and powerful. 1.MySQL is a relational database, and uses SQL for CRUD operations. 2. It is simple to install and requires the root user password to be configured. 3. Use INSERT, UPDATE, DELETE, and SELECT to perform data operations. 4. ORDERBY, WHERE and JOIN can be used for complex queries. 5. Debugging requires checking the syntax and use EXPLAIN to analyze the query. 6. Optimization suggestions include using indexes, choosing the right data type and good programming habits.


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