RESTful API Lab 8

Lab#8 Loans MicroService

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In this lab we will create a loans microservice, similar to the accounts service.

Figure 1: Project Layout

Schema.sql, LoansConstants, ILoansService and LoansServiceImpl and LoansMapper files are given. Use port 8090 in the .yml file.

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Creating a Loan

First create a customer as before using the accounts microservice.

Fig. 2 Create a customer

Now using the same mobile number create a loan. The mobile number supplied must be 10 digits long. A loan cannot already exist for the customer with given mobile number.

Fig. 3 Create a loan - Mobile number too short

Fig. 4 Create a loan - Loan already exists for customer

Fig. 5 Loan created success.

Fig. 6 Creating a loan – code in LoansServiceImpl

The loan is create using default values as shown and the number is generated as shown

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Fetch loan details

Fig. 7 Fetching loan details - success

Fig. 8 Fetching loan - mobile number not 10 digits

Fig. 9 Fetching loan – no loan for given mobile number

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Update Loan details

Fig. 10 Updating loan –loan details updated successfully

Fig. 11 Fetch updated values –loan details updated

Fig. 12 Updating loan –validation errors in data

See LoansDto for error example

Fig. 13 Handling errors in LoansDto

Fig. 14 Update loan - Mobile number not 10 digits

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DELETE Mapping

Fig. 15 Deleting a loan

Fig. 16 Deleting a loan – mobile number too short

Fig. 17 Deleting a loan – loan with mobile number not found