Design And Implementation Of Comprehensive Mapping System For Water Census

Water resources survey is an important work of national management,can help the government water resources and environmental management agencies to achieve the fine management of water resources.With the rapid popularization and development of computer technology,network technology,water conservancy survey introduced advanced optical fiber communication,interactive multimedia,database management,automatic mapping,satellite remote sensing technology,improve the information management of water conservancy survey information,sharing and automatic level.At first,this paper analyzes the research background of water conservation census cartographic generalization system,summed up the system of domestic and foreign research present situation,summarizes the problems existing in the current system,elaborated the system research goal and the significance,research content and structure of system are described.Secondly,this paper introduces the system background,respectively is the J2 EE technology,JavaBean technology,Tomcat service technology,MySQL database technology,analysis the advantages of object oriented programming technology,web business logic processing technology and database technology,to facilitate the realization of a perfect system.Again,this paper from the four aspects of economics,management,technology and society on the system feasibility analysis,verify the system design and implementation is feasible,the UML use case diagram is derived using the system business logic function,respectively is data management function,thematic layer management functions,thematic symbol library management functions,thematic map out production diagram template management features,thematic map function,custom thematic map making function,a key type batch drawing function,etc.,from the aspect of system reliability,safety and consistency were reliability analysis.Then,this paper designs the system network topology structure,hardware and software deployment architecture,system architecture etc.,using a structured process design of each system structured process and process of the algorithm model and better using the Java programming language development,with E-R diagram and relational table design the system database.The paper goes on to describe the system implementation and deployment environment,and described the database persistence layer,business logic processing layer and presentation layer implementation of the key code,given the functions of each system run shot.At the end of this paper,the system were tested a system function test and performance test case is designed,from the two aspects of the system function and performance test the operation effect of the system,the system test results display has good reliability,security and response.The water conservation census cartographic generalization system can be specialized management of water resources distribution,every graph management component and layer content,convenient water conservation census comprehensive thematic mapping management,improve the mapping of shared applications.